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Climate

Soil Microbes Alter DNA in Response to Climate Change

A 10-year study of soil ecosystems has determined that microbes alter their genetic code in response to a warming climate so they can process excess carbon being absorbed by plants from the atmosphere, a team of U.S. researchers reports in the journal Applied and Environmental Microbiology.

New research shows soil microbes can alter their DNA to adapt to the warming climate.
Photo courtesy of Shutterstock

A two degree Celsius temperature increase spurred microbes in soil ecosystems to—over many generations—tweak their DNA, amping up their respiratory systems and converting extra organic carbon in the soil to carbon dioxide.

The soil contained extra carbon because the two degree temperature increase made plants grow faster and higher; when those plants began to die, the carbon in their leaves, stems, and roots was added to the soil and taken up by the microbial community. Understanding the "black box" of carbon's fate in soil ecosystems holds important clues for better forecasting an ecosystem's response to climate change, says Georgia Institute of Technology researcher Kostas Konstantinidis, an author of the study.

"One reason that models of climate change have such big room for variation is because we don’t understand the microbial activities that control carbon in the soil," Konstantinidis said.

Visit EcoWatch’s CLIMATE CHANGE  page for more related news on this topic.

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Roderick Eime / Flickr / CC BY 2.0

New Evidence Suggests Ancient Egypt Was Brought Down By Volcanoes and Climate Change

Ancient Egypt is often described as an exotic place—pyramids, hieroglyphics, lavishly worshipped kings and queens.

But in many ways, it has a lot of parallels to modern life. It was an economically diverse, culturally vibrant and unequal place.

The millenniums-old society also struggled with a phenomenon that people today know all too well: climate change. And it may have ultimately led to the civilization's demise, according to a new paper by a team of researchers at Yale University.

The team of researchers studied the tail-end of ancient Egypt during the Ptolemaic dynasty between 305-30 BCE.

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Kids Harmed by Portugal Fires Reach Key Crowdfunding Goal for Climate Lawsuit

As Portugal reels from its worst wildfires on record, seven Portuguese children have met an important crowdfunding goal for their major climate lawsuit against 47 European nations.

More than £20,000 ($26,400) was pledged by 589 people, allowing the Global Legal Action Network (GLAN)—the nonprofit coordinating the lawsuit—to identify and compile evidence to present to the European Court of Human Rights in Strasbourg, France. GLAN now has a new stretch target of £100,000.

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German Nature Reserves Have Lost More Than 75% of Flying Insects

A new study published Wednesday in the journal PLOS ONE adds more evidence that insect populations around the globe are in perilous decline.

For the study, researchers from Radboud University in the Netherlands, alongside their German and English colleagues, measured the biomass of trapped flying insects at 63 nature preserves in Germany since 1989. They were shocked to discover that the total biomass decreased dramatically over the 27 years of the study, with a seasonal decline of 76 percent and mid-summer decline of 82 percent, when insect numbers tend to peak.

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Politics

Pushing Toxic Chemicals and Climate Denial: The Dark Money-Funded Independent Women’s Forum

By Stacy Malkan

The Independent Women's Forum is a 501(c)(3) nonprofit that has taken money from tobacco and oil companies, partners with Monsanto, defends toxic chemicals in food and consumer products, denies climate science and argues against laws that would curb the power of corporations.

IWF began in 1991 as an effort to defend now Supreme Court Justice (and former Monsanto attorney) Clarence Thomas as he faced sexual harassment charges. The group now says it seeks to "improve the lives of Americans by increasing the number of women who value free markets and personal liberty."

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Toxic Toys? After Nine Years, a Ban on Harmful Chemicals Becomes Official

Phthalates are a particularly harmful type of chemical, used, among a range of other ways, to soften plastic in children's toys and products like pacifiers and teething rings. In response to mounting concern about the serious health impacts of phthalates—most notably, interference with hormone production and reproductive development in young children—Congress voted overwhelmingly in 2008 to outlaw the use of a few phthalates in these products and ordered the Consumer Product Safety Commission (CPSC) to assess the use of other types of the chemical in these products. After much delay, the CPSC voted 3–2 Wednesday to ban five additional types of phthalates in kids' toys and childcare products.

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Wikipedia

Oil Spills Pose Dire Threats to Marine Life

Prime Minister Justin Trudeau says oil pipelines have no place in BC's Great Bear Rainforest. Opponents of the approved Kinder Morgan pipeline expansion to the West Coast and the cancelled Energy East pipeline to the East Coast argue pipelines and tankers don't belong in any coastal areas. Research led by the Raincoast Conservation Foundation confirms the threat to marine mammals in BC waters from a seven-fold increase in tanker traffic is considerable.

After examining potential impacts of a 15,000-cubic-meter oil spill in BC waters on 21 marine mammals, researchers concluded most individuals would be at risk and a few local populations wouldn't survive. Baleen whales, for example, are highly susceptible to ingesting oil because they breathe through blowholes, filter and eat food from the ocean surface and rely on invertebrate prey. Oil residue can stick to the baleen, restricting the amount of food they consume.

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September 2017: Earth's 4th Warmest September on Record

By Dr. Jeff Masters

September 2017 was the planet's fourth warmest September since record keeping began in 1880, said the National Oceanic and Atmospheric Administration's (NOAA) National Centers for Environmental Information (NCEI) and NASA this week. The only warmer Septembers came during 2015, 2016 and 2014. Minor differences can occur between the NASA and NOAA rankings because of their different techniques for analyzing data-sparse regions such as the Arctic.

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Shocking Photo of Dehorned Black Rhino Wins Top Award

Africa loses an average of three rhinos a day to the ongoing poaching crisis and the illegal rhino horn trade. In 2016 alone, 1,054 rhinos were reported killed in South Africa, representing a loss in rhinos of approximately six percent. That's close to the birth rate, meaning the population remains perilously close to the tipping point.

This year, the Natural History Museum in London awarded photographer Brent Stirton the 2017 Wildlife Photographer of the Year grand title for his grisly image of a black rhino with its two horns hacked off in South Africa's Hluhluwe-Imfolozi Park.

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