THE controversial idea that global warming could trigger a sudden drop in temperatures – maybe not in a matter of days as portrayed in the recent disaster movie The Day After Tomorrow, but possibly within a century – has finally been put to rest.
The latest ice core drilled from northern Greenland is showing that the last interglacial period, despite being warmer than today, did not end in a sudden freeze. Rather, it took thousands of years for the warm temperatures to give way to the next ice age.
The Greenland ice sheet is made from layers of snow that have compacted…
