Researchers recently discovered a fossil of what may be the oldest known multicellular organism, dated to roughly one billion years ago. Although there are a few known multicellular organisms that predated the sudden emergence of complex life 500 million years ago, the discovery of this ancient creature pushes back theread more

  A multinational team of researchers has found evidence of human habitation in South Africa’s Wonderwerk Cave stretching back in time to nearly 2 million years ago—perhaps the earliest known habitation of a cave by humans—offering a timeline of the evolution of stone tools, the use of fire, and even theread more