A UT San Antonio-led international research team has identified chitin, the primary organic component of modern crab shells ...
Earth froze over 717 million years ago. Ice crept down from the poles to the equator, and the dark subglacial seas suffocated ...
Morning Overview on MSN
New scans expose Martian meteorite that crashed on Earth packed with ancient water
A chunk of rock that blasted off Mars and crash-landed on Earth is turning out to be one of the richest archives of ancient Martian water ever found. New scans of the famous “Black Beauty” meteorite ...
Morning Overview on MSN
400 million years ago Earth’s biggest land life-form was a mystery giant
Hundreds of millions of years before dinosaurs, the tallest things on land were not trees or animals but towering, trunk-like ...
Experience a romantic Valentine’s Day like no other by dining underground in Arizona. Unique setting, cozy atmosphere, and ...
Learn how culture, survival, and science created some of history's strangest meals.
Oxygen is a vital and constant presence on Earth today. But that hasn't always been the case. It wasn't until around 2.3 ...
After the Dinosaur-Killing Asteroid Wrecked the Planet, Life May Have Bounced Back Surprisingly Fast
Some 66 million years ago, life on Earth had a pretty bad day. The infamous Chicxulub asteroid slammed into the planet. The ...
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