Comparing the moon rocks brought back from the Apollo missions to howardite and eucrite meteorites, researchers have determined that an event known as the lunar cataclysm 4 billion years ago peppered both the moon and a far-off asteroid.
The Strong, Loud Type Chris Christie is offering a blunt-talking tough-guy routine to win over voters.
The XX Factor
Duggar Revelations Are Just the Latest Sex Abuse Scandal to Rock Far-Right Fundamentalism
What Happened at Slate This Week? Assistant interactives editor Andrew Kahn on the best of Slate, from the history of slavery to Mad Men.
Ironic Misandry Claims Its First Victim A woman tweets #KillAllWhiteMen and the Internet explodes.
How Things Break Ali fought Liston 50 years ago. Two legends were born, but another was broken.