A study published today in the journal Nature confirms earlier reports of the first-ever successful gene-editing of embryos in the U.S. Though controversial, the treatment could one day be used to address any of the 10,000 disorders linked to just a single genetic error.

Earth is entering its sixth mass extinction event, posing a "frightening assault on the foundations of human civilization," says a new study co-authored by Professor Gerardo Ceballos at the University of Mexico.

Hacked emails from the United Arab Emirates ambassador to the US show the Gulf monarchy has strong ties, including financial, to influential and politically connected Washington think-tanks, says The Intercept's Zaid Jilani.

President Trump has ended the CIA program arming anti-Assad rebels. How did Syria get to where it is today, and what does Trump's decision mean for the conflict? We host a debate