Double asteroid impact: Site in Sweden may show binary impact on Earth.
Two Asteroids May Once Have Hammered Earth Together (Video) 
Slate in motion.
March 24 2014 4:52 PM

Once Upon a Time, Two Asteroids Hit Earth

Is this ancient site our first true “doublet”?

A pair of Swedish craters 10 miles away from each other seem to match in composition and age, dating back about 450 million years. 

Paca Thomas is a regular video contributor to Slate.

  Slate Plus
Hang Up And Listen
Nov. 24 2015 3:14 PM The “Classic, Irrational New York Exuberance” Bonus Segment The Hang Up and Listen crew discusses the hype over Kristaps Porzingis and his extraordinary height.