For the first time in modern history, scientists have observed an entire river disappear in the space of days.
Historical evidence suggests it usually takes thousands of years for the process to occur, but in this case the Slims River fed by Canada’s Kaskawulsh Glacier was co-opted in only four days.
The phenomenon – called river piracy – is where one river’s flow is captured by another. But scientists hae never seen such a rapid piracy and qualifies the timeframe as “geologically instantaneous and… likely to be permanent.”
Several rivers disappeared overnight in giant cracks or sinkholes in Mexico, Africa and Russia due to intense droughts. Video from Dahboo 777