Darren Ankrom
Contributor
It's Been At Least 500 Years Since California Had This Little Snowpack
A new study provides that latest in a long series of milestones marking the severity of the state's drought, which is now in its fourth year and has led to mandatory water restrictions.
Tens of Thousands of Stranded Walruses Are Once Again Gathering in Alaska
Melting sea ice appears to be causing the animals to flee the ocean, which scientists say highlights the rapidly changing conditions in the Arctic.
Humans Are So Efficient at Killing That Scientists are Calling Us 'Super Predators'
Humans kill nine times as many land carnivores and 14 times more adult fish than other predators.
Cow Farts and Belches Are Warming the Planet — but Scientists Think They've Got a Solution
Researchers have developed a diet supplement for cows that reduces by 30 percent the amount of methane — a potent greenhouse gas —that they produce.
Hillary Clinton's Climate Change Pledge Is Only 'Half the Way There,' Say Environmentalists
Clinton's plan says the number of solar installations will increase by 700 percent if she becomes president, but reveals nothing about the candidate's positions on fracking, the Keystone XL pipeline, or oil drilling in the Arctic.
Here's What Caused Megafauna Like the Mammoths to Go Extinct
Overhunting by humans has long been blamed for killing off the megafauna, but new research shows it might have been climate change, providing a sober history lesson about the impacts of a warming world.
Any Way You Look at It, This Government Report on Climate Change Is Really Bad News
The National Oceanic and Atmospheric Administration and the American Meteorological Society say that even if greenhouse gas emissions ended immediately the oceans would continue to warm for centuries.
Here's Why Alaska's Wildfires Are Really Bad News for Everyone
The state has already had its fifth worst wildfire season, and scientists worry about what impact the blazes are having on Alaska's carbon-rich permafrost.
It May Be Even Worse for the Polar Bears Than Previously Thought
Two new US government reports paint a very bad picture for polar bears, which are under threat due to diminished sea ice extent in the Arctic, a region that is warming at twice the rate as the rest of the world.
The Supreme Court Ruled Against the EPA — But It's Probably Not a Big Deal
Businesses and states say the US Environmental Protection Agency didn't properly account for the cost of implementing rules to limit mercury and other pollutants from power plants.
Conservationists Are Intentionally Carving the Shells of Turtles on the Brink of Extinction
There are as few as 500 ploughshare tortoises remaining in the wild, mostly in Madagascar, and poachers can get $50,000 or more on the black market for one of the beautiful black and gold animals.
Synthetic Rhino Horn Made With a 3-D Printer Is the Latest Tool to Fight Poaching
Conservationists worry that flooding the rhino horn market with synthetics could backfire and distract attention from more viable solutions like reducing consumer demand.