Earth’s Longest Ice Age May Have Repeatedly Thawed and Refrozen for 56 Million Years
Artistic representation of a Snowball Earth. Credit: Wikimedia Commons. The Sturtian glaciation was one of the most extreme…
Seasonal and Multi-Decadal Climate Cycles Persisted during Snowball Earth, Scientists Say
A new analysis of exquisitely preserved laminated rocks (varves) from the Port Askaig Formation on the Garvellach Islands,…
Ancestors of Modern Demosponges Were Earth’s First Animals: Study
Scientists from MIT and elsewhere have identified chemical fossils that may have been left by ancient sponges in…