This simple metal tube helps scientists predict drought before it happens

Posted 5 hours ago by

Grist

On a snowy February morning, Toby Rodgers strapped on a pair of snowshoes and trudged across a snowy field in Washington’s Cascade mountains. Rodgers, a hydrologist for the U.S. Department of Agriculture’s Natural Resources Conservation Service, had traveled into the mountains that morning to sample snow. He had also brought along something unusual looking: a []