Aaron Schachter is an Assignment Editor for The World, developing and editing stories with staff and freelance reporters around the world. He previously spent 8 years covering the Middle East from Jerusalem and Beirut.
Tycho Brahe (Painting by Eduard Ender/Wiki Commons)
New research suggests that Tycho Brahe, the Danish astronomer who died more than 400 years ago, was not felled by mercury poisoning.
Host Aaron Schachter has more.