Colombian astronomers have discovered what they call a "comet graveyard" in the main asteroid belt between the orbits of Mars and Jupiter, and even describe how some of the dormant slabs of rock and ice can "come back to life."
Procedural Purgatory It’s time to stop asking when Loretta Lynch will be confirmed and start wondering if she ever will be.
Biggest Sellout Now that Guinness World Records is in bed with publicity-seeking companies, can we trust it?
What Happened at Slate This Week? Alison Griswold describes her experience reporting on the Germanwings tragedy.
Is This Thing On? The fierce debate over whether we should try to contact extraterrestrial life or wait for aliens to contact us.
Even Lufthansa’s Exhaustive Psychiatric Tests Couldn’t Have Stopped a Tragedy Like the Germanwings Crash