LifeEye of the beholder: How colour vision made us human Most of us can distinguish a million or more hues. A winding evolutionary path led to this amazing ability – and perhaps to our explosion of brainpower Features
LifeConifer seed fossils caught learning helicopter flight Millions of years ago, plant seeds started spinning like rotors in order to be dispersed by the wind, but they had to lose one of two wings to do it well News