LifeKiller fungi made us hot-blooded Being warm-blooded takes a lot of energy, so why did it evolve? It may be a shield against deadly fungal diseases, writes Rob DunnFeatures
LifeBaby apes' arm waving hints at origins of language Young apes rely on arm waving and head shaking to get their message across, backing the idea that visual gestures were a first step on the road to human language ¿ìè¶ÌÊÓÆµ