"There is a path forward to avoid a global extinction crisis for sharks, but the time to act is now."

"The sea otters are stabilizing [these creek banks] for free in exchange for an all-you-can-eat crab feast."

With more and more people living in cities, new research digs into growth's effect on trash, wastewater, and greenhouse gas emissions.

Bird populations in North America are in steep decline. A new study points to window collisions, cats, and habitat loss—and what you can do to help.

A tiny invasive ant is disrupting the life of African lions. It's making it harder for them to hunt zebra, their preferred prey.

"This is the first time that a non-algae microbe has been shown to influence the ability of corals to survive a heat-stress event."

Fruits and veggies from urban farms and gardens have a carbon footprint that is, on average, six times greater than conventionally grown produce.

Just like rings in trees, rings found in the tiny ear bones of fish can reveal clues about the effects of climate change.

A new method to remove CO2 from the atmosphere involves molecules that become acidic when exposed to light.

Scientists are working to understand threats to bird populations from renewable energy plants.