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

EMAIL NEWSLETTER Photos and News of the Week

Get the top photos and news of the week from National Geographic News, plus occasional breaking-news alerts.

Please enter a valid email address
Privacy Policy

MOST VIEWED NEWS

PHOTOS: Chile Volcano Erupts With Ash and Lightning

Youngest Supernova in Milky Way Found

VIEW FROM SPACE: Before and After the Cyclone
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

Photo and Headline Widget

Put our latest news and photos on your Web page or desktop—automatically updates! See Sample
Download Widget