HumansA mouthful of history: How teeth reveal our evolutionary past Fossil incisors, canines, premolars and molars help pin down where we came from, but as Evolution's Bite shows, reading them is a tricky business Culture
LifeOldest plant-like fossils discovered are 1.6 billion years old The discovery suggests that plants and complex life on Earth are at least 400 million years older than previously thought 51¶¯Âþ