Live Science

What's Hot This Week 8 New Substances Added to List of Carcinogens by Remy Melina Eight new substances have been added to a list of carcinogens by the U.S. Department of Health and Human Services. Tiny Fossil May Be World's Smallest Dinosaur by Stephanie Pappas A new fossil discovery could be the world's smallest known dinosaur - a feathered, birdlike creature that lived more than 100 million years ago and grew no more than 15.7 inches (40 centimeters) long. Sponsored by: To Hit Homers, Night Owls Should Play in the Evening Gallery of Oddities: Interesting Things in Harvard's Closets Pinatubo Flashback, June 13, 1991: Uneasy Rumblings Stunning X-rays Reveal Fish Insides Europe Calls For Healthy Lunches for Workers