Making the rounds: Scientists have discovered what could be an ancient pyramid far larger than the Great Pyramid of Giza. The really interesting part is where it's located:

Researchers in Bosnia on Wednesday unearthed the first solid evidence that an ancient pyramid lies hidden beneath a massive hill — a series of geometrically cut stone slabs that could form part of the structure's sloping surface.

So far I haven't found any word on who might've built them, or when. Maybe when the Discovery documentary comes out they'll have it all figured out.