There are extraterrestrials among us. They landed four billion years ago when Earth was just forming. And they weren't ...

Astronomer and director of the multidisciplinary Columbia Astrobiology Center at Columbia University, Caleb Scharf, spoke to us about a interesting idea that has plagued scientists for decades ...

There's a rare material called Darwin Glass that Tasmanian Aboriginals have prized for centuries. And while it took Western ...