Recent fossil finds could mean that "Lucy" wasn't our direct ancestor, some scientists say. Others strongly disagree.

Earth's seasons look very different at locations not far from each other, 20 years' worth of satellite data reveals. Earth's seasonal cycles can vary dramatically across short distances, even at the ...

Through the analyses of gases and fluids preserved within salt crystals, the team extended the direct record of Earth’s ...

Four billion years ago, Earth was violent, hot, and unstable. Yet new research suggests that by then, life had already ...

New research suggests that for about a billion years, Earth’s rotation stayed stable at 19-hour days due to a balance between ...

A newly reconstructed fossil face from Ethiopia reveals surprising complexity in early human evolution. By digitally fitting together teeth and fossilized bone fragments, researchers reconstructed a ...

A few of the year’s most impressive hotel stays recalibrated our standards for great hospitality, deepened our experiences of the places we visited, and inspired us to linger after checkout. From a ...