Ecologists are desperate to forestall a devastating invasion of the Lakes. Can electric fences block carp from Lake Michigan, or should canal be closed?
Do tides and seiches occur on lakes? Tides are changes in water level caused by the gravitational pull on water by the moon and, to a lesser extent, the sun. Tides are of interest mainly in oceans and their coastal estuaries, which are part of one big body of water that is free to move [...]