The best of EcoWatch, right in your inbox. Sign up for our email newsletter!
Spy Images From Cold War a 'Gold Mine' for Climate Scientists
The recent declassification of tens of thousands of images from Cold War spy satellites is helping climate scientists compare Siberian terrain between then and now, and they're showing some obvious signs of climate change.
It was common practice during the Cold War for the U.S. and Soviet Union to spy on each other using any means necessary, which included satellite and aircraft images from space to find military bases and possible signs of invasion. After the Soviet Union was broken apart, the U.S. released their images from Corona and Gambit, two reconnaissance satellites that were decommissioned in the 1980s.
The University of Virginia is now using those images to study the remote area of the Siberian tundra. By using images from current satellites, they are able to create a time lapse of the terrain. They found that the shrubbery and forested areas expanded by 26 percent since the 1960s images were taken.
"These spy images are a gold mine as a reference point," said Howie Epstein, coauthor of the research. "We know from Earth-observing satellite data that the Arctic generally has been greening for 35 years or so. But the Siberian tundra had not been as closely observed until relatively recently.
"We now know that a lot of greening has been going on there, too, with tall shrubs and woody vegetation. The vegetation has been getting both taller and expanding in space and range."
Though this may sound normal or even natural, Siberia has been widely affected by this expansion. Increased vegetation means an increase in carbon dioxide uptake or heat absorption, leading to a warmer regional climate and less snowfall overall. This has altered the ratio of plants to animals and affected the food web in the area.
To confirm their findings, the scientists traveled to the northern region of Russia to take samples. After gaining some insight on how the plants are spreading across the terrain, they were able to verify the dramatic changes. However, they also found that some areas have had a reverse effect and are actually browning. But there is still more research needed to understand this change of events.
"It's clear that vegetation dynamics are more complex across tundra than previously thought," said Epstein. "We still have a lot of work to do to understand Arctic changes and how this affects and is affected by changes to the global climate."
EcoWatch Daily Newsletter
By Jake Johnson
Calling the global climate crisis both the greatest threat facing the U.S. and the greatest opportunity for transformative change, Sen. Bernie Sanders unveiled today a comprehensive Green New Deal proposal that would transition the U.S. economy to 100 percent renewable energy and create 20 million well-paying union jobs over a decade.
The Parties to CITES agreed to list giraffes on Appendix II of the Convention on International Trade in Endangered Species (CITES) today at the World Wildlife Conference or CoP18 in Geneva. Such protections will ensure that all giraffe parts trade were legally acquired and not sourced from the poached giraffes trade and will require countries to make non-detriment findings before allowing giraffe exports. The listing will also enable the collection of international trade data for giraffes that might justify greater protections at both CITES and other venues in the future.
The WHO stressed that more research is needed on the potential health risks of microplastic ingestion. luchschen / iStock / Getty Images Plus
The UN's health agency on Thursday said that microplastics contained in drinking water posed a "low" risk at their current levels.
However, the World Health Organization (WHO) — in its first report on the potential health risks of microplastic ingestion — also stressed more research was needed to reassure consumers.
'This is a Sick Statement': Brazil’s Bolsonaro, Under Pressure for Anti-Environmental Policies, Blames NGOs for Record Amazon Fires
'Work Together' or 'Destroy it': Goldman Prize Winner Francia Márquez on World's Second Deadliest Country For Environmental Activists
In April 2018, Afro-Colombian activist Francia Márquez won the prestigious Goldman Environmental Prize, thanks to her work to retake her community's ancestral territories from illegal gold mining. However, her international recognition comes at a very risky price.
By Stuart Braun
A year after activist Greta Thunberg first stood in the rain outside the Swedish parliament with her now iconic "Skolstrejk för klimatet" — school strike for the climate — placard, the movement she spawned has set the tone for environmental protest action around the world.