http://www.huffingtonpost.com/
In late November, a flock of migrating snow geese landed in a lake in Butte, Montana. Soon, they began to die. Because what they landed in was the Berkeley Pit, a Superfund site filled with acidic and metal-laden toxic waste from copper mining. The lake was “white with birds;” thousands died. Weeks later, as the story has gone viral, officials are still counting.
The Berkeley Pit had killed migrating geese before. “It was a shock to hear it happening again, on a much larger scale,” says Andrea Stierle, who, along with her husband Don, has been studying the Berkeley Pit for more than three decades. In 1995, over 300 migrating geese landed in the pit and died from ingesting the toxic water.
The Stierles were chemists at nearby Montana Tech at the time, and they were in search of microbes living in the toxic waste water that could make antibiotics and other useful substances. That arrival of the first flock of geese changed the microbial makeup of the Berkeley Pit and likely the outcomes of Stierles’ research, too.