Photo: Single Asteroid Impact, Not Two, Killed Dinos, Study Says

Email to a Friend << Back to Full Story


A new study of seabed sediments adds support to the theory that a single asteroid impact at Chicxulub, on Mexico's Yucatan Peninsula (seen here), wiped out the dinosaurs.

Scientists are embroiled in a fierce debate between supporters of a single-impact theory and those that believe at least two strikes, along with other factors, caused the extinctions.

Image from MapMachine

MOST VIEWED NEWS

PICTURES: 2012 Doomsday Myths Debunked

2012: Six End-of-the-World Myths Debunked

APOCALYPSE PICTURES: 10 Failed Doomsday Prophecies
NEWS FEEDS    After installing a news reader, click on this icon to download National Geographic News's XML/RSS feed. After installing a news reader, click on this icon to download National Geographic News's XML/RSS feed.

Get our news delivered directly to your desktop—free.
How to Use XML or RSS

ADVERTISEMENT

NATIONAL GEOGRAPHIC'S PHOTO OF THE DAY

Today's National Geographic Photo of the Day

• Today's Photo

• Download as Wallpaper

50 Drives of a Lifetime

National Geographic Traveler has scoured the globe for the world's most beautiful, interesting, and off-beat road trips. Dive in to get drive directions, quizzes, photos, and more.