Winter bugs called snow fleas are born in icy waters and feed on algae that grows on snow. Spring-tails are also called snow fleas and they leap around on snow banks. They eat the sap which oozes from trees. Spring-tails look very similar to fossils of 300 million years ago!
A dip in deep water
A dip in deep water Cold water from the polar regions helps to drive
deep ocean water circulation. This deep ocean circulation plays a
role in large, sudden climate changes, such as the melting of
glaciers. New research has concluded that the rate at which deep
Southern Ocean water has recently been circulating is only about
one-third of the rate for the previous 700 years. This recent
change in the circulation rate is part of a continuing cycle of
climate change which has been occurring about every 1500 years for
the past 130,000 years. The last period of unusually cold weather
occurred in Europe and lasted from about 1400 to 1900. It was
called 'The Little Ice Age'. 5 NOVEMBER 1999, P. 1049
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