THE North Pole isn’t melting after all, says a researcher in Sweden. Recent
reports that ice in the Arctic is rapidly disappearing have been taken as
graphic proof of global warming. But a more extensive study now shows the ice
hasn’t thinned at all since the late 1980s.
Peter Winsor from the University of Gothenburg in Sweden looked at data from
1986 to 1997 showing sea ice thickness throughout the Arctic. The data had been
collected by submarines cruising under the ice and firing sonar pulses upwards
to determine its thickness. After adjusting the data to account for seasonal
differences,…
