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Carbon Dating

Killer Impact Theory Comes Under Attack

natureheader | Alexandra Witze | Posted 05.13.2014 | Science

One of the most controversial ideas about prehistoric North America — that an impact by an extraterrestrial object 12,800 years ago triggered a cold...

Explanation Offered For Bronze Age 'Franken-Mummies'

Posted 07.10.2012 | Science

By: Charles Choi, LiveScience Contributor Published: 07/09/2012 01:54 PM EDT on LiveScience Mummies found off the coast of Scotland are Frankenste...

Cara Santa Maria

How Old Is Life On Earth, And How Do We Know?

HuffingtonPost.com | Cara Santa Maria | Posted 05.24.2012 | Science

The Earth is 4.54 billion years old; 3.8 billion years ago, the very first life form came into existence; 225 million years ago, dinosaurs came on the...