Satellites show Arctic sea ice is melting even faster than scientists realized

A new study based on NASA and ESA satellite data shows that Arctic sea ice is thinning at a “frightening rate.” Measuring the ice via satellites each month from 2018 to 2021, polar scientists Sahra Kacimi of the California Institute of Technology’s Jet Propulsion Laboratory and Ron Kwok of the University of Washington’s Applied Physics … Read more

The Earliest Unequivocal Evidence of Our Species May Be Even Older Than We Realized

The course of human evolution never did run smooth. The emergence of hominins on the continent of Africa is full of twists, turns, gaps, and dead ends, which makes it all the more difficult to retrace the rise of our own species.   Today, we still don’t really know when or where the first Homo … Read more