Fossilized footprints in the salt flats of White Sands National Monument, in the southwestern U.S. state of New Mexico, reveal humans walking in the exact footsteps of a giant sloth and then confronting it, possibly hurling spears.
Nearly 163 million people among India's population of 1.3 billion — or more than one in 10 — lack access to clean water close to their home, according to a 2018 WaterAid report. That is the most of any country in the world.
EPA Administrator Scott Pruitt wants to roll back fuel efficiency standards developed under President Obama. The decision would increase carbon emissions and pollution nationwide and also sets the stage for a possible legal battle with California, which wants to keep its more stringent standards.
A three-year study finds that land degradation and rapidly declining biological diversity has profound implications for humanity, putting billions of people at risk of living without adequate food, water and energy.
Pollution from coal plants has been linked to adverse health effects, including increased risk of cardiovascular problems and shortened lifespans. Now a new study suggests a reason why: coal plant emissions can effect telomeres — protective tips at the end of each string of DNA that are linked to aging.
North Korea said on Saturday it would immediately suspend nuclear and missile tests, scrap its nuclear test site and instead pursue economic growth and peace, ahead of planned summits with South Korea and the United States.
The last people in Mexico who speak a language called Huave live on a remote stretch of the Pacific coast. But an ongoing conflict over clean energy has pitted the Huave against each other. Now some of the last Huave speakers no longer talk to each other.