Earth Day brings everything from special Google Doodles and beautiful views of our planet to the historic signing of an international climate agreement.
The two nations topping the world in greenhouse gas emissions agreed at the Paris talks to cut way back. But critics have stalled a key part of the U.S. plan, and China's good start may be fragile.
The agreement addresses "what to do about the 2-liter diesel cars on the road and the environmental consequences resulting from their excess emissions," the Justice Department says.
Solar Impulse 2 is attempting to circumnavigate the world using only the sun's power. It has been grounded in Hawaii for maintenance and is now on a three day journey heading to California.
Tennessee's alternative to Obamacare is faltering. Steve Inskeep talks to Knoxville's mayor about health and political issues. Chris Green of Berea College weighs in on the area's political leanings.
A day after the first criminal charges related to Flint's lead tainted water were filed, residents of the Michigan city and others wonder how high up the investigation into the crisis will go.
Two Michigan Department of Environmental Quality employees and a Flint water official are being charged with misconduct, neglect of duty and tampering with evidence over the city's contaminated water.
Researchers say climate change has made weather more pleasant in many parts of the U.S. Winters have been milder, and summers haven't become much hotter. But that's likely to change in coming years.
San Francisco already required buildings to be "solar ready," and starting in 2017, actual panels will be mandated. It's the first major U.S. city to take such a step, according to the bill's sponsor.
From Northern California to Alaska, commercial and amateur foragers are now scouring the hills in search of black morels — prized mushrooms which grow in land ravaged by forest fires.