Spring Flows

Irrespective of its cause, the effects of global warming seem to be becoming facts of life. Scientists at the US Geological Survey (USGS) have recently found evidence in eastern North America that the snow is melting and running off into rivers earlier than it did in the first half of the twentieth century.

The researchers have found that winter-spring flows in many rivers in the northern United States and Canada are occurring between five and ten days earlier. To find out more switch on to my Spotlight physical sciences column on PSIgate.