Maybe we cannot blame late-night TV, endless Internet surfing, midnight snacks, good books, bothersome work deadlines and other distractions of modern life for encroaching on our sleep.
Scurrying under the feet of dinosaurs in swampy terrain in Spain around 125 million years ago was a furry chipmunk-sized critter with tiny hedgehog-like spines, horny body armor and an unpleasant fungal hair infection.
A trove of 47 fossil human teeth from a cave in southern China is rewriting the history of the early migration of our species out of Africa, indicating Homo sapiens trekked into Asia far earlier than previously known and much earlier than into Europe.
