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.
TODAY IN SLATE
The Democrats’ War at Home
How can the president’s party defend itself from the president’s foreign policy blunders?
Congress’ Public Shaming of the Secret Service Was Political Grandstanding at Its Best
Michigan’s Tradition of Football “Toughness” Needs to Go—Starting With Coach Hoke
A Plentiful, Renewable Resource That America Keeps Overlooking
Windows 8 Was So Bad That Microsoft Will Skip Straight to Windows 10
Cringing. Ducking. Mumbling.
How GOP candidates react whenever someone brings up reproductive rights or gay marriage.
You Deserve a Pre-cation
The smartest job perk you’ve never heard of.