More Evidence for Anthropogenic Climate Change

With bonus allusion to the precautionary principle.

The rapid rise in greenhouse gases over the past century is unprecedented in at least 800,000 years, according to a study of the oldest Antarctic ice core which highlights the reality of climate change.

Air bubbles trapped in ice for hundreds of thousands of years have revealed that humans are changing the composition of the atmosphere in a manner that has no known natural parallel.

Scientists at the British Antarctic Survey (BAS) in Cambridge have found there have been eight cycles of atmospheric change in the past 800,000 years when carbon dioxide and methane have risen to peak levels...

"Ice cores reveal the Earth's natural climate rhythm over the last 800,000 years. When carbon dioxide changed there was always an accompanying climate change," Dr Wolff said. "Over the past 200 years, human activity has increased carbon dioxide to well outside the natural range and we have no analogue for what will happen next...."