Check back in a few minutes

Server Maintenance

Your server is going through a few minutes of routine maintenance. Please don't touch your browser for a few minutes.

What do I do?

  • If you were posting a comment or making a post on your blog then do not press BACK on your browser. Wait 5 minutes and press the refresh icon on your browser. Your comment or post will be sent as normal.
  • If you are browsing a blog here just wait a few moments and hit refresh. The page you were expecting will appear.

What Wiped Out The Dinosaurs?

Nearly all of us now know--or think we know--how the dinosaurs perished: some 65 million years ago, a giant asteroid or comet struck the earth, spewing huge amounts of dust and debris into the air. That dust, according to a widely accepted theory first proposed by Nobel laureate Luis Alvarez, was circulated by the winds and enshrouded the earth for months, blocking sunlight and causing temperatures to plummet. As a result, the dinosaurs, and 70% of all other terrestrial species, were wiped out.

But this scenario was rudely challenged last week by Kevin Pope, a former NASA scientist. Reviewing recent studies...

Want the full story?

Subscribe Now


Get TIME the way you want it

  • One Week Digital Pass — $4.99
  • Monthly Pay-As-You-Go DIGITAL ACCESS$2.99
  • One Year ALL ACCESSJust $30!   Best Deal!
    Print Magazine + Digital Edition + Subscriber-only Content on

Learn more about the benefits of being a TIME subscriber

If you are already a subscriber sign up — registration is free!