Archive
This 2012 artist's rendering provided by the American Museum of Natural History shows a hypothetical placental mammal ancestor, a small, insect-eating animal. A study released Thursday, Feb. 7, 2013 details the family tree of mammals that have lengthy gestations before birth. It goes back to this shrewish critter slightly bigger than a mouse with a nasty set of teeth. And it first popped in the world a little more than 65 million years ago -- just after the cosmic crash which is theorized to have caused the extinction of non-avian dinosaurs.
Raw: Massive Protests Fill Brazilian Streets
Raw: German President Welcomes President Obama
Fans Cheer Dramatic Heat Comeback
Raw: Arizona Wildfire Scorches 8 Square Miles
Hoffa Mystery Still Fascinates After 4 Decades
Raw: 1 Dead in Shooting at Mo. Apartment Complex
Raw: Huge Fire Near Yosemite National Park
Raw: Obama Arrives in Berlin
3 Charged in Ohio With Enslaving Mom, Daughter
Obama Seeks G-8 Support on Syria
Raw: Volcano Erupts Near Mexico City
Kid Couture: Spending Big Bucks on Babies
Suicide Bombs Target Baghdad Mosque, Killing 29
Military Plans to Put Women in Combat Jobs
Solar Power Chargers in NYC Parks
Civil Rights Groups Sue NYPD Over Muslim Spying
Raw: First Lady, Daughters Enjoy Irish Sights
RAW: NSA Director Says 50 Plots Foiled
Boeing, Airbus Battle for Sales Supremacy
