How TV Weathercasters Are Fighting Climate Misinformation
By Pam Radtke Russell in New Orleans
Local TV weather forecasters have become foot soldiers in the war against climate misinformation. Over the past decade, a growing number of meteorologists and weathercasters have begun addressing the climate crisis either as part of their weather forecasts, or in separate, independent news reports to help their viewers understand what is happening and why it is important.
And the reports are having an impact.
Studies by the George Mason University Center for Climate Change Communication show that in communities where local weather forecasters are reporting on the climate crisis, "public opinion is changing more rapidly", said Ed Maibach, director of the center and an author of the studies. "We showed a really strong impact – people who saw the climate reporting came to understand climate change was more personally relevant," he said.
The change has come as meteorologists and weather forecasters themselves have changed their opinions on the climate crisis and its causes. In 2008 a survey of some American Meteorological Society members found that only 24% of weathercasters agreed with the Intergovernmental Panel on Climate Change (IPCC) that warming was caused by humans. In 2010, a study by Maibach found that 54% agreed that global warming is happening. But by 2017 a full 90% agreed that climate crisis is happening, and 80% indicated it was human-caused.
"There's been an enormous shift," he said.
The change has been partially brought about by Climate Central's Climate Matters reporting program founded after Maibach released a study showing that the public has a high degree of trust with local forecasters.
"All TV weather forecasters are really good science communicators," Maibach says. Not only are they scientists, but they are trusted by their viewers because they don't generally report on politics or other controversial topics, he says.
Today, more than 600 TV weathercasters participate in the program, which provides training, scientific information, charts and videos for education and newsroom use.
Here's a snapshot of four of those local TV news forecasters.
‘You have the chance to shift the public view a little’
Keith Carson, WLBZ/WCSH, Maine
At the beginning of his career, Carson wasn't fully onboard with the idea that climate crisis was occurring and it was caused by humans. Carson began working in the field in 2006. Today, though, he says: "Frankly it's getting harder and harder to deny it scientifically." And now he knows how easy it is now for anyone to twist facts and create even more divisiveness.
These days, Carson regularly shares information about the climate crisis and other scientific topics with viewers through a nightly science segment called "Brain Drops".
For Carson, the issue is bigger than just climate change. "If people are going to dismiss science and the scientific process, it opens the door for other regressions," in scientific thinking.
Carson talks about climate change with his viewers about once every two weeks. "I think it's important to do, but not to hammer it daily. It's against human nature to change minds, and hammering it home daily would make some people dig in more." He approaches the topic like many of his colleagues do, by simply presenting the facts about what is happening.
Weathercasters, he says, have a unique opportunity because they are an integral, well liked part of the community, "and you have the chance to shift opinion a little".
While Carson does get some pushback from viewers, most of those who comment on his climate reporting are not his viewers, he says.
From stories on breweries to ranchers: find a way to relate
Elisa Raffa, of KOLR10/KOZL, Springfield, Missouri
Raffa, a self-described science geek, believes her job is to educate her viewers about how climate change will impact them. She's done stand-alone news segments about how climate change will impact fishing in local lakes, a local coffee shop and a local brewery. One piece detailed how ranchers must be more careful with their cattle as black vultures move into the region because of warming temperatures.
"It gets people to look at climate change outside of the political realm," she says.
Raffa is careful to ask objective questions about things such as precipitation and temperature, and rarely outwardly underscores climate change as the problem. Her sources usually do that themselves. That hits home with viewers who see climate change from a relatable perspective.
"Climate change will impact us in so many ways, and I love teaching my viewers and helping them learn how they can prepare and adapt and be more resilient," she said.
In addition to her special reports, Raffa talks about the climate crisis in subtle ways during her forecasts. She highlighted a recent uptick in morning high temperatures hoping to show her viewers that overnight temperatures are increasing.
"This is what I signed up for," she said. "This is a science issue. It's my duty to communicate this to the public. If I don't, who is going to?"
‘I used to be more subtle … but now we see more effects’
Jorge Torres, KOB-TV, Albuquerque, New Mexico
Over his career, Torres, chief meteorologist at KOB, has become bolder in addressing climate change. "In the beginning I was more subtle, but as more and more facts become apparent, I am more open now saying this is human induced. For me the biggest aspect is carbon dioxide," he says. "We are seeing that increasing globally and we are seeing the effects locally."
Earlier this year, Torres did an extensive news piece on the issue of water in New Mexico and how smaller snow pack will impact the state's water supply. Temperatures are getting warmer and warmer as well, he says, a fact that he points out during his daily forecasts.
"Whenever the weather story allows me to say," something about the climate crisis, he does, but he ensures it is in the proper context.
The bottom line is that he wants viewers to be open-minded about it. "Don't just hear something and dismiss it."
The forecaster quoting Bubba Gump
Heather Waldman, WGRZ, Buffalo, New York
As the trusted "station scientist", Waldman says that talking about the climate crisis is a natural fit for her and other weathercasters. "It fits in our identity."
Waldman and her station have unveiled a series of short, entertaining and informative videos called "the climate minute", that are online and are scheduled to run this week on TV.
Weather presenter Heather Waldman talks global heating in 'The Climate Minute' – video
The one-minute videos are time-consuming to produce because while Waldman uses information from Climate Matters, she also does her own research, reading IPCC and other reports.
She says she decided on short one-minute videos because she doesn't want to lose the audiences' attention.
"The audience isn't going to pay attention to anything for more than a couple of minutes and we use succinct, catchy images. The goal to find some sort of thing, where people say oh, this will have an impact – this is affecting me right now."
On an upcoming piece on how ocean acidification is affecting shrimp populations, she is using Bubba Gump shrimp quotes to keep it fun.
"Intrinsically we have the responsibility to present not just weather facts but climate facts – we don't want to pontificate, but we want to make them actionable and entertaining."
Pam Radtke Russell is a senior editor at Engineering News-Record, in New Orleans, and a specialist on climate adaptation.
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By Jacob L. Steenwyk and Antonis Rokas
From the mythical minotaur to the mule, creatures created from merging two or more distinct organisms – hybrids – have played defining roles in human history and culture. However, not all hybrids are as fantastic as the minotaur or as dependable as the mule; in fact, some of them cause human diseases.
When Looking Through a Microscope Isn’t Close Enough.<p>For the last few years, <a href="http://www.rokaslab.org/" target="_blank">our team at Vanderbilt University</a>, <a href="https://www.researchgate.net/lab/Gustavo-Goldman-Lab" target="_blank">Gustavo Goldman's team at São Paulo University in Brazil</a> and many other collaborators around the world have been collecting samples of fungi from patients infected with different species of <em>Aspergillus</em> molds. One of the species we are particularly interested in is <a href="https://doi.org/10.1006/rwgn.2001.0082" target="_blank"><em>Aspergillus nidulans</em>, a relatively common and generally harmless fungus</a>. Clinical laboratories typically identify the species of <em>Aspergillus</em> causing the infection by examining cultures of the fungi under the microscope. The problem with this approach is that very closely related species of <em>Aspergillus</em> tend to look very similar in their broad morphology or physical appearance when viewing them through a microscope.</p><p>Interested in examining the varying abilities of different <em>A. nidulans</em> strains to cause disease, we decided to analyze their total genetic content, or genomes. What we saw came as a total surprise. We had not collected <em>A. nidulans</em> but <em>Aspergillus latus</em>, a close relative of <em>A. nidulans</em> and, as we were to soon find out, <a href="https://doi.org/10.1016/j.cub.2020.04.071" target="_blank">a hybrid species that evolved through the fusion of the genomes</a> of two other <em>Aspergillus</em> species: <em>Aspergillus spinulosporus</em> and an unknown close relative of <em>Aspergillus quadrilineatus</em>. Thus, we realized not only that these patients harbored infections from an entirely different species than we thought they were, but also that this species was the first ever <em>Aspergillus</em> hybrid known to cause human infections.</p>
Several Different Fungal Hybrids Cause Human Disease.<p>Hybrid fungi that can cause infections in humans are well known to occur in several different lineages of single-celled fungi known as yeasts. Notable examples include multiple different species of <a href="https://doi.org/10.1002/yea.3242" target="_blank">yeast hybrids</a> that cause the human diseases <a href="https://rarediseases.info.nih.gov/diseases/6218/cryptococcosis" target="_blank">cryptococcosis</a> and <a href="https://www.cdc.gov/fungal/diseases/candidiasis/index.html" target="_blank">candidiasis</a>. Although pathogenic yeast hybrids are well known, our discovery that the <em>A. latus</em> pathogen is a hybrid is a first for molds that cause disease in humans.</p>
(Left) Candida yeasts live on parts of the human body. Imbalance of microbes on the body can allow these yeasts, some of which are hybrids, to grow and cause infection. (Right) Cryptococcus yeasts, including ones that are hybrids, can cause life-threatening infections in primarily immunocompromised people. Centers for Disease Control and Prevention<p><a href="https://doi.org/10.1371/journal.ppat.1008315" target="_blank">Why certain <em>Aspergillus</em> species are so deadly</a> while others are harmless remains unknown. This may in part be because <a href="https://doi.org/10.1016/j.fbr.2007.02.007" target="_blank">combinations of traits, rather than individual traits</a>, underlie organisms' ability to cause disease. So why then are hybrids frequently associated with human disease? Hybrids inherit genetic material from both parents, which may result in new combinations of traits. This may make them more similar to one parent in some of their characteristics, reflect both parents in others or may differ from both in the rest. It is precisely this mix and match of traits that hybrids have inherited from their parental species that <a href="https://www.nytimes.com/2010/09/14/science/14creatures.html" target="_blank">facilitates their evolutionary success</a>, including their ability to cause disease.</p>
The Evolutionary Origin of an Aspergillus Hybrid.<p>Multiple evolutionary paths can lead to the emergence of hybrids. One path is through mating, just as the horse and donkey mate to create a mule. Another path is through the merging or fusion of genetic material from cells of different species.</p><p>It is this second path that appears to have been taken by our fungus. <em>A. latus</em> appears to have two of almost everything compared to its parental species: twice the genome size, twice the total number of genes and so on. But unlike other hybrids, which are often sterile like the mule, we found that <em>A. latus</em> is capable of reproducing both asexually and sexually.</p><p>But how distinct were the parents of <em>A. latus</em>? By comparing the parts contributed by each parent in the <em>A. latus</em> genome, we estimate that its parents are approximately 93% genetically similar, which is about as related as we humans are with lemurs. In other words, <em>A. latus</em>, an agent of infectious disease, is the fungal equivalent of a human-lemur hybrid.</p>
How A. Latus Differs From its Parents.<p>Elucidating the identity of closely related fungal pathogens and how they differ from each other in infection-relevant characteristics is a key step toward reducing the burden of fungal disease. For example, we found that <em>A. latus</em> was three times more resistant than <em>A. nidulans</em>, the species it was originally identified as using microscopy-based methods, to one of the most common antifungal drugs, <a href="https://www.drugbank.ca/drugs/DB00520" target="_blank">caspofungin</a>. This result provides a clear example of the potential importance of accurate identification of the <em>Aspergillus</em> pathogen causing an infection.</p><p>We also examined how <em>A. latus</em> and <em>A. nidulans</em> interact with cells from our immune system. We found that immune cells were less efficient at combating <em>A. latus</em> compared to <em>A. nidulans</em>, suggesting the hybrid fungus may be trickier for our immune systems to identify and destroy.</p><p>In the midst of the COVID-19 pandemic, our quest to understand <em>Aspergillus</em> pathogens is becoming more urgent. Growing evidence suggests that <a href="https://doi.org/10.1111/myc.13096" target="_blank">a fraction of COVID-19 patients are also infected with <em>Aspergillus</em>.</a> More worrying is that these <a href="https://doi.org/10.3201/eid2607.201603" target="_blank">secondary <em>Aspergillus</em> infections</a> can worsen the clinical outcomes for those infected with the novel coronavirus. That being said, we stress that little is known about <em>Aspergillus</em> infections in COVID-19 patients due to a lack of systematic testing, and none of the infections identified so far appear to have been caused by hybrids.</p><p>So, when it comes to hybrids, some are fantastic (the minotaur), some are helpful (the mule) and some are dangerous (<em>Aspergillus latus</em>). Understanding more about the biology of <em>Aspergillus latus</em> may help in our understanding of how microbial pathogens arise and how to best prevent and combat their infections.</p>
This Saturday, June 6, marks National Trails Day, an annual celebration of the remarkable recreational, scenic and hiking trails that crisscross parks nationwide. The event, which started in 1993, honors the National Trail System and calls for volunteers to help with trail maintenance in parks across the country.
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