LifeThe animal economists that can wheel and deal as well as any humanFrom monkey markets to fishy business, we’re finding that many animals make rational trades. Even brainless fungi have a thing or two to teach usFeatures
LifeStone tools hint that our first human ancestors lived all over Africa We thought the first Homo species evolved in East Africa 2.8 million years ago, but stone tools from Algeria suggest our origins may have spanned the continent News