A giant asteroid crash caused an ancient ice age on Earth, but also gave life a boost

CNN | Sep 18, 2019 at 6:03 PM
  • Arth endured an ancient ice age 466 million years ago when a giant asteroid broke apart and sent waves of dust toward our planet over the next 2 million years.
  • And surprisingly, while the massive inflow of dust caused global temperatures on Earth to plummet, it also provided a chance for new evolving species to flourish.
  • Over the course of one year, Earth receives one thousand semis’ worth of dust.