University of New Mexico

(Photo credit: Carl Agee/ScienceMag.org)

Baseball-size Martian rock recovered in the Sahara

LOS ANGELES (AP) – A 2-billion-year-old rock that broke from Mars and landed in the Sahara desert is quite different from other Martian meteorites. Not only is it older than most, it also contains more water, a yearlong analysis found.

2013/01/03

Tourists hike along the South Rim of the Grand Canyon with the North Rim in background, Arizona

Study: Grand Canyon formed during the dinosaur era

It’s the most common question visitors to the Grand Canyon ask: “How old is it?” A provocative new study suggests the natural wonder is much older than commonly believed. Using a new tool to date the age of rocks, a team of researchers contends the western section of the Grand Canyon may be 70 million years old.

2012/11/29

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