Live Science

What's Hot This Week Dino-Killing Cosmic Impact Wiped Out Ancient Birds, Too by Charles Choi, LiveScience Contributor Although birds survived the mass extinction that claimed their brethren, the rest of the dinosaurs, birds did not emerge unscathed, scientists now find. 'Switchblade' Claw Reveals How Dino Fought and Killed by Charles Q. Choi, LiveScience Contributor Battle damage linked to the fearsome curving talon of a newly discovered dinosaur relative of Velociraptor is shedding light on how it was used as a weapon, scientists find. Sponsored by: Best Science Photos of the Week - Sept. 17, 2011 Scientists Worry over 'Bizarre' Trial for Failing to Predict Earthquake Child Abuse Head Injuries Increased During Recession, Study Finds Volcanic Vents Give Sneak Peek of Acidic Ocean Aging and Exercise (Infographic)