For more than 30 years, scientists have argued over whether a vast ocean once spread across the northern third of Mars. Now a ...
New modeling suggests Ceres may have an ice-rich crust and the frozen remains of an ancient muddy ocean. (CREDIT: ...
The Waiho Loop moraine in New Zealand's southern Alps had long been viewed as a southern icon of a recent glacier response to cooling climate, possibly the Younger Dryas cold event. But a closer look ...