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Just over a day after blasting off, a SpaceX crew capsule arrived at the International Space Station on Sunday, delivering the replacements for NASA's two stuck astronauts.

As severe weather season kicks off for large portions of the country, climate scientists warn cuts at NOAA and NWS could put public safety in jeopardy.

Scientists report that a fossil of a partial face from a early human ancestor in Spain is between 1.1 and 1.4 million years old.

Most of the world has dirty air, with just 17% of global cities meeting WHO air pollution guidelines, a report Tuesday found.

This past week, beavers were legally released into the English countryside for the first time since they were hunted into extinction there in the 17th century. Conservationists hailed it as a watershed moment for this keystone species, which helps .. ...

Utterances like um, wow and mm-hmm used to be dismissed as irrelevant linguistic detritus. But some linguists now think they play an essential role in regulating conversations, and may be the hardest part of language for artificial intelligence to .. ...