Giant tortoise on Pinzon Island, Galapagos.
Rory Stansbury, Island Conservation/Flickr
The Galapagos Islands' giant tortoises are one of the world's best examples of evolution. Scientists are pioneering new conservation strategies to save them from extinction and restore their habitat.
A massive fish die-off occurred in Redondo Beach, California in 2011 caused by oxygen-starved fish.
Warming waters due to climate change are losing oxygen, threatening the health of fish and ecosystems.
Ethanol made from corn goes into our gas tanks. Now refiners who pay for the subsidy are complaining of rising costs.
A fight's breaking out over who should pay subsidies for corn ethanol, and it is consumers who may end up paying for any changes.
We need other species to survive for the services they provide and the knowledge they can share.
Global Environment Facility
The presidential candidates should be talking about exploring and cataloguing our biosphere, which holds vital clues for how humanity should navigate the future.
A White House proposal to tax crude oil would address the U.S.‘s perennially underfunded highway maintenance program.
Obama's proposal to add $10 tax to crude oil raises the thorny question of whether the U.S. can continue to fund its highway infrastructure with a fuel tax that hasn't changed since 1993.
Before there was E10, in the 1970s there was ‘gasohol,’ another name for gasoline that had been blended with ethanol.
Ted Cruz opposes subsidies for biofuels and still managed to win in ethanol-friendly Iowa. Is corn ethanol starting to lose its political clout?
Transgenic American chestnuts could soon take root.
Adding a single wheat gene helps the American chestnut withstand a fungal pathogen that nearly wiped these hardwood trees out of the eastern forests they once dominated.
A solar array goes up in New York. Is this the best place to locate solar, given the relatively clean New York state grid?
The wind and solar industries scored a huge win by getting extended tax credits, but research shows this isn't the best policy for lowering emissions through renewable energy.
Tiny termites build mega mounds.
They're the soil-builders that allow Africa's arid savannas to be lush grasslands. What do they do inside their huge mounds – and how does a collective mind allow them to do it?