15 EcoWatch Stories on Environmental and Racial Injustice
As protests are taking place across our nation in response to the killing of George Floyd, we want to acknowledge the importance of this protest and the Black Lives Matter movement. Over the years, we've aimed to be sensitive and prioritize stories that highlight the intersection between racial and environmental injustice. From our years of covering the environment, we know that too often marginalized communities around the world are disproportionately affected by environmental crises.
Now seems like a critical time to reshare a selection of these stories from our writers and our media partners. We know that if we want a healthier planet and life, environmental racism needs to be addressed. Here are 15 stories that highlight racial and environmental injustice and are worth reading during this time. There is no environmental justice without racial justice.
Published April 9, 2020, Author Jordan Davidson
Across the country, the novel coronavirus is severely affecting black people at much higher rates than whites, according to data released by several states, as The New York Times reported.
In New York, which has seen the most COVID-19 related deaths, the virus has disproportionately affected both the black and Hispanic population. In New York City, Hispanics make up 29 percent of the population, but 34 percent of the city's COVID-19 deaths, while African Americans are 22 percent of the city's population and 28 percent of the fatalities, according to new statistics from the city and US News and World Report.
Published Nov. 6, 2018, Author Olivia Rosane
When it comes to the EPA's internal culture, EPA union AFGE 3331 President Nate James implied more education was needed about the impacts of racist messages like the ones that have popped up since August.
"We have diversity training but nothing that addresses, for lack of better words, when hateful language is being used it creates a threatening atmosphere, a hostile environment, where employees are concerned about their safety," James told ABC News.
James said that, earlier in the summer, another incident occurred where a note was left on an African American employee's desk reading "BACK TO THE JUNGLE U GO." The union said that EPA management's response to that incident showed "callous disregard and inattentiveness" and "demoralized" the employee.
Published May 7, 2020, Author Ben Knight / Deutsche Welle
Statistically, the increased risk of lead poisoning associated with being black persists even when you correct for all other factors, from poverty to education levels to the presence of smokers in the home, to quality of housing.
"A lot of people had been saying: 'Oh black children are just more at risk because they're more likely to be poor,'" said study co-author Deniz "Dersim" Yeter, an independent academic and undergraduate nursing student in Kansas. "Yeah, poverty's a problem, but it's nothing compared to being a black child in America."
Yeter was "astounded" by the results of their three-year analysis. "I knew it was bad, but I was expecting something like a marginal increase, something statistically significant, but ... not two to six times higher," they told DW. "That is obscene."
Published March 12, 2019, Author Olivia Rosane
The first-of-its-kind study, published in the Proceedings of the National Academy of Sciences, found that black and Hispanic Americans breathe in large amounts of dangerous air pollution that is mainly caused by the actions of non-Hispanic whites.
Even though minorities are contributing less to the overall problem of air pollution, they are affected by it more," study co-author and University of Minnesota engineering professor Jason Hill, who is white, told USA Today. "Is it fair (that) I create more pollution and somebody else is disproportionately affected by it?"
Published April 8, 2020, Author Climate Nexus
An area in Louisiana whose predominantly black and brown residents are hard-hit by health problems from industry overdevelopment is experiencing one of the highest death rates from coronavirus of any county in the United States.
St. John the Baptist parish, which sits along the Gulf Coast region known as Cancer Alley, has seen 30 of its 43,000 residents die of COVID-19 since the outbreak began – a death rate of 68.7 per 100,000 people, compared to New York City's rate of 29.
"We were getting calls almost every hour," parish coroner Christy Montegut told The Guardian. "...They all died in the same way. They got to a hospital, were on a ventilator, but the body just couldn't keep going. They died in spite of full treatment. The virus is overwhelming."
Environmental Negligence vs. Civil Rights: Black and Hispanic Communities Get More Pollution, Fewer Jobs
Published Oct. 2, 2018, Author Olivia Rosane
By the numbers, black Americans hold 10.8 percent of the jobs at industrial facilities, but suffer 17.4 percent of the exposure to air pollution. Hispanics hold 9.8 percent of the jobs, but suffer 15 percent of the pollution exposure. Both populations have less than seven percent of the high-paying jobs offered at industrial sites, U.S. News & World Report reported.
The fossil fuel industry was the worst offender. At petroleum industry and coal-product facilities, blacks and Hispanics suffered 48 percent of the pollution exposure and only received around a fifth of the jobs.
Published July 23, 2019, Author Adrienne Hollis / Union of Concerned Scientists
The extreme heat is almost three additional weeks' worth of extreme heat days for places that are more than 25% African American as opposed to those that are less than 25% African American. The reasons why African American communities are and will continue to experience more extreme heat days are likely complex, but it's probable that the root of the problem can be traced back to centuries of systemic mistreatment of people of color.
Published July 11, 2019, Author Mallika Khanna / Common Dreams
The idea that environmentalism is an "elite" concern is a lie. Those who stand to gain the most from sweeping environmental protections are the marginalized people corporations assume can be put in toxic environments without fear of backlash.
That's the best reason yet to support a Green New Deal, which would not only curb climate change, but also revitalize the U.S. economy, create millions of jobs, and create alternatives to harmful, unsustainable industries like the petrochemical industry in Cancer Alley that have harmed people for years.
That could make poor communities a lot less poor — and a lot more resilient.
Published Nov. 15, 2017, Author David Leestma
The study found oil and natural gas facilities were built or currently exist within a half-mile of more than one million African Americans, exposing these communities to higher risks of cancer due to toxic emissions. "African-Americans are exposed to 38 percent more polluted air than Caucasian Americans, and they are 75 percent more likely to live in fence-line communities than the average American," the report said, referring to neighborhoods near to gas and oil facilities.
Counties located in the Gulf Coast Basin are home to the most counties with oil refineries and higher percentages of African Americans. Michigan, Louisiana and Tennessee, the report found, have the highest percentage of African American residents living in oil refinery counties. Texas and Louisiana, both in the Gulf Coast Basin, were home to the largest African American individuals at risk for cancer, with nearly 900,000 living in areas above the EPA's level of concern.
"The effects of oil and gas pollution are disproportionately afflicting African Americans, particularly cancer and respiratory issues, and the trend is only increasing," said Dr. Doris Browne, the National Medical Association president.
Published March 9, 2020, Author Derrick Z. Jackson / Union of Concerned Scientists
For communities long polluted by industry, which are disproportionately poor and of color, the Trump administration's changes promise particular devastation. Such communities already suffer higher rates of illnesses from asthma to cancer, life-altering effects such as low birth weight and cognitive child development, and daily insults to quality of life in diesel exhaust, soot penetrating into homes and contaminated yards and playgrounds.
If the administration has its way, NEPA implementation guidelines would be rewritten so that even in neighborhoods already densely packed with toxic industries, a proposed facility need only assess its own pollutants, not how much they combine and compound those of nearby facilities to worsen the overall quality of air, water and land.
To make sure residents cannot complain about such compounded damage, the Trump administration is trying to severely limit the opportunity for mothers, fathers, seniors, teens and community leaders to speak directly to the government.
Published Feb. 19, 2020, Author Dr. Brian R. Shmaefsky / Union of Concerned Scientists
Historically, the benefits of science and technology have not been shared equally as is discussed in the 2016 Nature article Is science only for the rich? A 2018 The Atlantic article Trump's EPA Concludes Environmental Racism Is Real discusses that at times science has been used against environmental justice communities. In addition, the "Belmont Report," produced by the National Commission for the Protection of Human Subjects of Biomedical and Behavioral Research, documents a long history of unequal benefits of medical research.
In part due to this history, scientists are not always or immediately trusted or welcome in environmental justice communities. Scientists also have a reputation for 'parachuting' into communities to conduct research and make recommendations for change without ever fully consulting the knowledge and lived experience of the people who live there. Community members want equal access to data, policymakers, and science or technology that can remediate environmental injustice.
Published Dec. 20, 2019, Author Climate Nexus
A major plastics manufacturing complex planned for construction in a highly-polluted region of Louisiana may disrupt a historic slave burial site, The Intercept reports.
Human remains and evidence of grave shafts were discovered earlier this year on land being developed by Formosa Plastics Group in St. James Parish in Louisiana. The plant could double the amount of air pollution in the region and emit 13 million tons of carbon pollution each year. Many of the residents of St. James Parish, located in a stretch of the state known as "Cancer Alley," one of the most polluted stretches in America, say they are descended from slaves who worked on various plantations in the area. "That's sacred ground," activist and St. James Parish resident Sharon Lavigne told The Intercept. "They're saying they don't care about your ancestors. They're slapping us in the face."
Published June 14, 2019, Author Teju Adisa-Farrar & Raul Garcia / Earthjustice
The spirit that drove communities of color and neighborhood residents throughout the U.S. to hang banners, picket, sit in and stand up in the 1950s and 1960s is alive today. Even though several communities of color across the nation have been displaced and burdened by pollution because of freeway development projects in the 1960s, NEPA helps to fight against exclusionary and environmentally disruptive planning processes.
As we fight to end environmental racism, we cannot allow the Trump administration and its allies in Congress to retrench the people's tools for access to justice. We cannot allow them to limit public comments and continue to shut communities out of the NEPA process. It is through direct action and community engagement that NEPA came to be; safeguarding it gives people more power to be a part of the decisions that determine what happens in their communities.
Published April 5, 2020, Author Derrick Z. Jackson / Union of Concerned Scientists
The risk of unequal treatment is embedded in even the seemingly universal "we're-all-in-this-together" advice we are getting to protect ourselves and stop the spread of the coronavirus. One person who sees this clearly is Lawrence Reynolds, a pediatrician in Flint, Michigan. He served on the 2016 Michigan task force which determined that the Flint Water Crisis in that 54-percent African American city was "a story of government failure, intransigence, unpreparedness, delay, inaction, and environmental injustice."
Reynolds retired a year ago but was asked by Flint's mayor to be an advisor for COVID-19 care.
He said he already sees where daily life for disadvantaged people is not being factored into public health advisories. "Take social distancing," he said. "That is much easier to do for a family that owns a single-family home where they can spread out inside the home and have a backyard to get some fresh air in private. That is much harder for people who live in small apartments in buildings where people are always passing each other in the hallways. No one has come up with a strategy as to how those folks are supposed to 'social distance.'"
Published April 7, 2020, Author Liz Carlisle / Yes! Magazine
The absence of a coherent U.S. land policy can be blamed for some of the current problems with farmland concentration, say the authors of the Data for Progress memo. But co-lead author Leah Penniman, founding co-director of Soul Fire Farm in Upstate New York, argues that the U.S. government has had a very influential de facto land policy over the past century, even if it wasn't articulated as such. "The very basis of U.S. land policy is rooted in the theft of land and the exclusion of people of color from land," Penniman explains. "This, of course, started with the genocidal stealing of almost the entire continent from the stewardship of Indigenous people … [and] throughout much of our history, there have been various state-level property ownership requirements that excluded people of color from being able to own property."
When people of color did amass property, Penniman says, they were targeted with violence.
"The Ku Klux Klan, the White Caps, and the White Citizens Council were responsible for lynching almost 4,500 people, many of whom were landowners, who they saw as having the audacity to get off the plantation and to want to stop sharecropping." The federal government also discriminated against black farmers through USDA programs, Penniman explains, resulting in a rapid decline of black farmers from 14% of the nation's farmers in 1910 to approximately 1% today.
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By Bill Sullivan
Black licorice may look and taste like an innocent treat, but this candy has a dark side. On Sept. 23, 2020, it was reported that black licorice was the culprit in the death of a 54-year-old man in Massachusetts. How could this be? Overdosing on licorice sounds more like a twisted tale than a plausible fact.
The Root of the Problem<p>The unfortunate man who recently succumbed to excessive black licorice consumption is not alone. There are a smattering of similar case reports in medical journals, in which patients experience <a href="https://pubmed.ncbi.nlm.nih.gov/26380428/" target="_blank" rel="noopener noreferrer">hypertension crisis</a>, <a href="https://doi.org/10.5414/cn107011" target="_blank" rel="noopener noreferrer">muscle breakdown</a> or even death. Adverse reactions are most frequently seen in people over the age of 40 who are eating far more black licorice than the average person. In addition, they are usually consuming the product for prolonged periods of time. <a href="https://doi.org/10.1056/NEJMcpc2002420" target="_blank" rel="noopener noreferrer">In the most recent case</a>, the Massachusetts man had been eating a bag and a half of black licorice every day for three weeks.</p><p>Licorice is a flowering plant native to parts of Europe and Asia. Its scientific name, <em>Glycyrrhiza</em>, is derived from the Greek words "glykos" (sweet) and "rhiza" (root). The aromatic and sweet extract from its root has long been used as an herbal remedy for a wide variety of health maladies, from heartburn and stomach issues to sore throats and cough. However, there is <a href="https://www.fda.gov/consumers/consumer-updates/black-licorice-trick-or-treat" target="_blank">insufficient evidence to support that licorice is effective in treating any medical condition</a>.</p><p>Glycyrrhizin (also called glycyrrhizic acid) is the chemical in black licorice that gives the candy its signature flavor, but it also leads to its toxic effects.</p><p>Glycyrrhizin mimics the hormone <a href="https://www.yourhormones.info/hormones/aldosterone/" target="_blank">aldosterone</a>, which is made by the adrenal glands when the body needs to retain sodium and excrete potassium. Sodium and potassium work together as a kind of cellular battery that drives communication between nerves and the contraction of muscles. Too much glycyrrhizin upsets the balance of these electrolytes, which can raise blood pressure and disturb the heart's rhythm. Other symptoms of excessive licorice intake include swelling, muscle pain, numbness and headache. Examination of the man who died from consuming too much licorice revealed that he had <a href="https://doi.org/10.1056/NEJMcpc2002420" target="_blank" rel="noopener noreferrer">dangerously low levels of potassium, consistent with glycyrrhizin toxicity.</a></p><p><a href="https://doi.org/10.1056/NEJMcpc2002420" target="_blank" rel="noopener noreferrer"></a>It should be noted that a number of licorice-based foods do not contain real licorice, but use a flavoring substitute called anise oil, which does not pose the dangers discussed here. In addition, despite its name, <a href="https://www.livestrong.com/article/537724-black-licorice-vs-red-licorice/" target="_blank">red licorice rarely contains licorice extract</a>. Instead, red licorice is infused with chemicals that impart its cherry or strawberry flavor.</p><p>Products that contain real licorice are usually labeled as such, and list licorice extract or glycyrrhizic acid among the ingredients. Be advised that some products, such as black jelly beans or Good & Plenty, are mixtures of different candies that contain both anise oil and licorice extract.</p>
Hidden Dangers That Increase Risk<p>Glycyrrhizin has the distinct licorice flavor and is <a href="https://www.urmc.rochester.edu/encyclopedia/content.aspx?contenttypeid=19&contentid=Licorice" target="_blank">50 times sweeter than sugar</a> and has been used in other types of candy, soft drinks, tea, Belgian beers, throat lozenges and tobacco. This can make it challenging to keep track of how much glycyrrhizin has been consumed, and a combination of these products could trigger adverse effects.</p><p>Some people take dietary or health supplements that already contain licorice, which increases the risk of toxic effects from eating black licorice candy. Certain medications such as <a href="https://doi.org/10.5414/cn107011" target="_blank">hydrochlorothiazide</a> are diuretics that cause increased urination, which can lower potassium levels in the body. Glycyrrhizin also lowers potassium levels, further disrupting the balance of electrolytes, which can produce muscle cramps and irregular heart rhythms.</p><p>People with certain preexisting conditions are more susceptible to black licorice overdose.</p><p>For example, patients who already have low potassium levels (hypokalemia), high blood pressure or heart arrhythmia are likely to have greater sensitivity to the effects of excessive licorice. Those with liver or kidney deficiencies will also retain glycyrrhizin in their bloodstream for longer times, increasing their risk of experiencing its adverse effects.</p>
What to Do?<p>If you're a fan of black licorice, there is no need to ban it from your pantry. Eaten in small quantities from time to time, licorice poses no significant threat to otherwise healthy adults and children. But it is advisable to monitor your intake.</p><p>With Halloween approaching, be sure to remind your kids that candy is a "<a href="https://www.heart.org/idc/groups/heart-public/@wcm/@global/documents/downloadable/ucm_305557.pdf" target="_blank">sometimes food</a>," especially the black licorice. The <a href="https://www.fda.gov/consumers/consumer-updates/black-licorice-trick-or-treat" target="_blank" rel="noopener noreferrer">FDA has issued warnings</a> about the rare but serious effects of too much black licorice, advising that people avoid eating more than two ounces of black licorice a day for two weeks or longer. The agency states that if you have been eating a lot of black licorice and experience an irregular heart rhythm or muscle weakness, stop eating it immediately and contact your health care provider.</p><p>Some scientists have further cautioned against the routine use of licorice in the form of a dietary supplement or tea for its alleged health benefits. A <a href="https://doi.org/10.1177/2042018812454322" target="_blank" rel="noopener noreferrer">review article from 2012</a> warned that "the daily consumption of licorice is never justified because its benefits are minor compared to the adverse outcomes of chronic consumption."</p>
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Material Revolutions: Shirts Made from Shellfish, Biodegradable Rum Bottles and Reusable Fast Food Containers
In the age of consumption, sustainability innovations can help shift cultural habits and protect dwindling natural resources. Improvements in source materials, product durability and end-of-life disposal procedures can create consumer products that are better for the Earth throughout their lifecycles. Three recent advancements hope to make a difference.
1. Allbirds Shirts Made From Shellfish<p>Sustainable sneaker start-up <a href="https://www.allbirds.com/pages/apparel" target="_blank">Allbirds</a> is known for its thoughtfulness for consumers and the environment. The four-year-old shoe company has become hugely popular by creating comfortable shoes made from responsibly sourced materials like tencel and wool, reported <a href="https://www.fastcompany.com/90565358/allbirds-new-clothing-line-includes-t-shirts-made-from-discarded-crab-shells" target="_blank">Fast Company</a>.</p><p>Recently, Allbirds launched its debut apparel line with garments for men and women made with eco-friendly materials that have a low carbon footprint, the report said.</p><p>Introduced along with the line is a new t-shirt material called "TrinoXO," which is made from wool and discarded snow crab shells from Canada's seafood industry, reported <a href="https://www.cnbc.com/2020/10/20/sustainable-sneaker-start-up-allbirds-is-selling-sweaters-t-shirts.html" target="_blank">CNBC</a> and <a href="https://www.cnn.com/2020/10/20/business/allbirds-sustainable-apparel/index.html" rel="noopener noreferrer" target="_blank">CNN</a>. The shells are the "number two discarded resource on earth," Allbirds claims, reported <a href="https://www.menshealth.com/style/a34427585/allbirds-apparel-clothing-line-review/" rel="noopener noreferrer" target="_blank">Men's Health</a>.</p><p>"Discarded material is the holy grail when it comes to sustainable fibers," Jad Finck, Allbirds head of innovation and sustainability, told Fast Company. "It's far better for the environment than getting raw materials from scratch."</p><p>The shells have antimicrobial properties that keep clothes fresh even after hours of wear, without the need to add "extractive" materials like zinc or silver, Men's Health reported. This allows for longer periods of wear between washes, reducing clothes' environmental footprint.</p><p>"We knew we wanted to be a real brand, and had this vision that we'd be an innovation company first, and a product company second," co-founder Joey Zwillinger told <a href="https://www.vogue.com/article/allbirds-launches-clothing" rel="noopener noreferrer" target="_blank">Vogue</a>. "And our products would solve problems for people in a natural way, and show the world that you don't have to compromise on the planet for amazing products."</p>
2. Bacardi Biodegradable Rum Bottles<p>By 2023, <a href="https://www.bacardi.com/us/en/" target="_blank">Bacardi</a> rum will be sold in 100% biodegradable bottles, <a href="https://www.businesswire.com/news/home/20201021005281/en/Bacardi-First-in-Fight-Against-Plastic-Pollution-With-100-Biodegradable-Spirits-Bottle" target="_blank">Business Wire</a> reported.</p><p>The alcohol giant is collaborating with Danimer Scientific, a leading developer of biodegradable products, to create the new bottles using the natural oils of plant seeds such as palm, canola and soy, the report said.</p><p>According to <a href="https://sports.yahoo.com/bacardi-to-make-100-biodegradable-spirits-bottle-124436841.html?guccounter=1&guce_referrer=aHR0cHM6Ly93d3cuZ29vZ2xlLmNvbS8&guce_referrer_sig=AQAAAE1Wl8ONNdph3ID8reylzGM8dbX575Mk96Jw6z3kHZaGjKCz_UgQgxH0Q1n3RNCzhOMBEZ7fAIf8iiOXLRtY9VVHNZsmb-w1VOJnGlzIbuwhmoBo_KOV4dba8FoWrkgmmwwCyQZnRoTL0Uda6HQ4pE5ewGWh2pwQzjS3gKAe1ynm" target="_blank">Yahoo Finance UK</a>, the new bottle will biodegrade in a wide range of environments, including compost, soil, freshwater and seawater. After 18 months, the bottle will disappear completely without leaving microplastics.</p><p>"Nodax PHA is one of the most promising eco-friendly materials in the world today because it delivers the biodegradability that consumers demand without losing the quality feel they receive from traditional plastic," said Danimer Scientific chief marketing & sustainability officer Scott Tuten, reported <a href="https://www.thrillist.com/news/nation/bacardi-biodegradable-spirits-bottle-plastic-free-packaging" target="_blank" rel="noopener noreferrer">Thrillist</a>. "The material provides the best of both worlds, and we look forward to working with Bacardí and incorporating PHA into their iconic packaging."</p><p>Bacardi is also creating a sustainably sourced paper bottle, Yahoo reported.</p><p>The manufacturing of both new bottle types will save energy over petroleum-based plastic ones. Bacardi plans to share the technology with competitors to help in the global fight against <a href="https://www.ecowatch.com/tag/plastic-pollution" target="_self">plastic pollution</a>, and aims to be 100% plastic-free by 2030, reported Thrillist.</p>
3. Burger King Reusable Fast Food Containers<p>Fast food giant <a href="https://www.bk.com/" target="_blank">Burger King</a> plans to launch reusable Whopper boxes and soda cups by next year. Partnering with TerraCycle's zero-waste packaging division Loop, Burger King will nudge customers to return the specialized packaging for hygienic washing and reuse, similar to how milk bottles used to be returned, reported <a href="https://www.marketwatch.com/story/can-burger-kings-reusable-packaging-change-fast-food-forever-11603392581" target="_blank">MarketWatch</a>.</p><p>"During COVID, we have seen the environmental impact of <a href="https://www.ecowatch.com/air-pollution-food-delivery-plastic-waste-2648454324.html" target="_self">increased takeaway ordering</a>, which makes this initiative by Burger King all the more important," said Tom Szaky, TerraCycle and Loop CEO, according to MarketWatch.</p><p>Customers who don't feel comfortable can opt-out of the service, <a href="https://www.abc10.com/article/entertainment/television/programs/the-buzz-burger-king-to-test-reusable-packaging-in-2021/77-f01f1b70-05b7-436d-9971-a7dd6081249b" target="_blank">ABC News</a> reported. Those who are willing to try will be charged a small deposit upon purchase, and when the packaging is returned, they will receive a refund, reported <a href="https://www.cnn.com/2020/10/22/business/burger-king-reusable-packaging-sustainability/index.html" rel="noopener noreferrer" target="_blank">CNN</a>.</p><p>Burger King and TerraCycle are aiming for a container that can be used at least 100 times, reported <a href="https://www.fastcompany.com/90566995/burger-kings-new-whopper-packaging-isnt-greasy-cardboard-its-reusable" rel="noopener noreferrer" target="_blank">Fast Company</a>.</p><p>"The benefit is, you're able to serve your guests without having to create that single-use item in the first place," Matt Banton, global head of innovation and sustainability at Burger King, told <a href="https://www.fastcompany.com/90566995/burger-kings-new-whopper-packaging-isnt-greasy-cardboard-its-reusable" rel="noopener noreferrer" target="_blank">Fast Company</a>. "This product is durable enough to go through the system multiple times, so it's ultimately reducing our environmental impact, and minimizing the amount of single-use packaging that we have to produce as well."</p><p>Burger King has also committed to sourcing 100% of its customer packaging from renewable, recycled or certified outlets, and recycling all customer packaging at its restaurants in the United States and Canada by 2025, reported CNN.</p>
There are many different CBD oil brands in today's market. But, figuring out which brand is the best and which brand has the strongest oil might feel challenging and confusing. Our simple guide to the strongest CBD oils will point you in the right direction.
The ghoulishly named ogre-faced spider can "hear" with its legs and use that ability to catch insects flying behind it, the study published in Current Biology Thursday concluded.
"Spiders are sensitive to airborne sound," Cornell professor emeritus Dr. Charles Walcott, who was not involved with the study, told the Cornell Chronicle. "That's the big message really."
The net-casting, ogre-faced spider (Deinopis spinosa) has a unique hunting strategy, as study coauthor Cornell University postdoctoral researcher Jay Stafstrom explained in a video.
They hunt only at night using a special kind of web: an A-shaped frame made from non-sticky silk that supports a fuzzy rectangle that they hold with their front forelegs and use to trap prey.
They do this in two ways. In a maneuver called a "forward strike," they pounce down on prey moving beneath them on the ground. This is enabled by their large eyes — the biggest of any spider. These eyes give them 2,000 times the night vision that we have, Science explained.
But the spiders can also perform a move called the "backward strike," Stafstrom explained, in which they reach their legs behind them and catch insects flying through the air.
"So here comes a flying bug and somehow the spider gets information on the sound direction and its distance. The spiders time the 200-millisecond leap if the fly is within its capture zone – much like an over-the-shoulder catch. The spider gets its prey. They're accurate," coauthor Ronald Hoy, the D & D Joslovitz Merksamer Professor in the Department of Neurobiology and Behavior in the College of Arts and Sciences, told the Cornell Chronicle.
What the researchers wanted to understand was how the spiders could tell what was moving behind them when they have no ears.
It isn't a question of peripheral vision. In a 2016 study, the same team blindfolded the spiders and sent them out to hunt, Science explained. This prevented the spiders from making their forward strikes, but they were still able to catch prey using the backwards strike. The researchers thought the spiders were "hearing" their prey with the sensors on the tips of their legs. All spiders have these sensors, but scientists had previously thought they were only able to detect vibrations through surfaces, not sounds in the air.
To test how well the ogre-faced spiders could actually hear, the researchers conducted a two-part experiment.
First, they inserted electrodes into removed spider legs and into the brains of intact spiders. They put the spiders and the legs into a vibration-proof booth and played sounds from two meters (approximately 6.5 feet) away. The spiders and the legs responded to sounds from 100 hertz to 10,000 hertz.
Next, they played the five sounds that had triggered the biggest response to 25 spiders in the wild and 51 spiders in the lab. More than half the spiders did the "backward strike" move when they heard sounds that have a lower frequency similar to insect wing beats. When the higher frequency sounds were played, the spiders did not move. This suggests the higher frequencies may mimic the sounds of predators like birds.
University of Cincinnati spider behavioral ecologist George Uetz told Science that the results were a "surprise" that indicated science has much to learn about spiders as a whole. Because all spiders have these receptors on their legs, it is possible that all spiders can hear. This theory was first put forward by Walcott 60 years ago, but was dismissed at the time, according to the Cornell Chronicle. But studies of other spiders have turned up further evidence since. A 2016 study found that a kind of jumping spider can pick up sonic vibrations in the air.
"We don't know diddly about spiders," Uetz told Science. "They are much more complex than people ever thought they were."
Learning more provides scientists with an opportunity to study their sensory abilities in order to improve technology like bio-sensors, directional microphones and visual processing algorithms, Stafstrom told CNN.
"The point is any understudied, underappreciated group has fascinating lives, even a yucky spider, and we can learn something from it," he told CNN.
In 'Road Map for a More Sustainable Future,' NY Regulator Tells Banks to Consider Climate Risks in Planning
By Brett Wilkins
Regulators in New York state announced Thursday that banks and other financial services companies are expected to plan and prepare for risks posed by the climate crisis.