Our planet was once a harsh, alien, icy world. Yet this deep freeze may have shaped you, me and all life on Earth ...

The find, led by Shuhai Xiao of Virginia Tech, suggests that the earliest sponges lacked mineral skeletons, which may explain why older fossils have remained elusive. Sponges are considered among the ...

Roughly 42,000 years ago, Earth’s magnetic field weakened dramatically during the Laschamps geomagnetic excursion, allowing more cosmic radiation to reach the atmosphere. In a peer‑reviewed study of ...

The North American southwest was dustier during interglacial climates, in contrast with global trends. Long-term regional dust emissions depend on the erosion of hillslope and tributary sediments into ...