Michigan Tech University biologists have been observing a remote Lake Superior island's fragile wolf population every winter since 1958, but they had to cut this season's planned seven-week survey short after just two weeks.
Over the last 25 years, the Salton Sea has lost a third of its water due to an over-allocated Colorado River. As it shrinks, the sea’s salts plus pollutants from agricultural runoff reach higher concentrations. To protect the air and water quality, shoreline residents have become community scientists.
"Canadian lakes are warming twice as fast as the rest of the lakes globally," said York University biologist Sapna Sharma, a co-author of a paper published in the journal Bioscience.
Trees are charcoal black on one side and bone white on the other, evidence of the path a wildfire took as it tore into Waterton Lakes National Park in southwestern Alberta nearly two years ago.
Three years after toxic algae in Lake Erie tainted the drinking water for more than 400,000 people, many are still leery about what's coming out of their faucets.