Live Science

Can World's 'Most Threatened' Tribe Be Saved? A new international campaign hopes to save a group of people who have been dubbed "the most threatened tribe in the world", the Awa tribe of Brazil, from encroaching outsiders who are gobbling up their land. The Awa¡ live in the Brazilian state of Maranho on lands set aside for their hunter-gatherer lifestyle.  Read More

Meteorite 3-Pack Own a real piece of space. A great gift and a great space collectible. Each meteorite comes in an attractive glass-top display box. Included on the information card is the name, where it was found, the class, date of fall/find, description and additional remarks. Size will vary but most are 1/2 inch to an inch in diameter. $39.95 $31.95 AFTER COUPON CODE: SPACEROCK20

Gallery: Images of Uncontacted Tribes In the closest images of an uncontacted tribe ever, a Survival international photographer captured a family of Mascho-Piro people on film near a river in Peru. Cocaine Eats Up Brain Twice as Fast as Normal Aging  Cocaine may speed up the aging of the brain, according to new research that finds that people who are addicted to the drug lose twice the brain volume each year as non-drug users. As the brain ages, it inevitably loses gray matter, the part of brain tissue made up of neuron cell bodies... Talk to Yourself? Why You're Not Crazy Bullying, Child Abuse Hasten Aging in Kids