When Greenland was really green
Plant debris buried under a mile of ice suggest a time of higher sea levels
‘It’s raining plastic’
Microplastics are everywhere, even settling down in the quieter reaches of the Rockies. Their effect on human health, if any, is to be determined
Sifting through the history of fire
How and when our ancestors mastered the use of fire remains debated. Researchers are hunting for answers buried in ancient ash and baked soils This story, which originally appeared in…
An electric fix for chemicals in groundwater
Neither water or grease can bond with PFAs. So researchers have gone down and dirty to zap these dangerous chemicals in the water supply Without knowing it, most Americans rely…