So far, strikes on Iran's facilities have created limited chemical and radiological hazards. Experts say that's not likely to change even if the U.S. uses a big bomb.

Billions of nocturnal Bogong moths migrate up to 1,000 km to cool caves in the Australian Alps that they have never previously visited. New research shows how they may find their way there and back.

Research shows developmental differences in the brains of children who were in utero during the weather event.

The European Union is trying to downgrade the protection status of wolves in Europe.

Author Dan Rubinstein paddled from Ottawa to New York City and back to understand how being near water benefits people. His book is called "Water Borne."

Goliath had been paired with several female tortoises before, in hopes of producing a hatchling, but the process wasn't successful until earlier this month.

Jeremy Greenberg was in charge of coordinating federal help after hurricanes, wildfires, earthquakes and other emergencies. He has resigned from leading FEMA's National Response Coordination Center.

Chesapeake Bay is at a turning point. Once severely polluted, the bay has seen major improvements in recent years. But President Trump's proposed budget would slash key programs.

Christopher Hanson was appointed to serve on the commission overseeing the nation's nuclear reactors during Trump's first term in 2020.

The Conservation Reserve Program is one of the largest voluntary land conservation initiatives in the U.S. More than 26 million acres of grassland and former crop land are enrolled.