You are currently viewing the summary.
View Full TextLog in to view the full text
AAAS login provides access to Science for AAAS members, and access to other journals in the Science family to users who have purchased individual subscriptions.
More options
Download and print this article for your personal scholarly, research, and educational use.
Buy a single issue of Science for just $15 USD.
Summary
A chance encounter between two huge chunks of rock in the asteroid belt reached out across 100 million years and 200 million kilometers to snuff out 90% of Earth's marine species, as well as the dinosaurs, 65 million years ago, according to a new analysis.
