Since the onset of climate change temperatures in the Siberian sub-Arctic have risen faster than almost anywhere else in the world and the thaw has now started what Sergei Kirpotin, a botanist from Tomsk State University, described as an ·ecological landslide that is proabably irreversible and is undoubtedly connected to climate warming.
Average temperatures in western Siberia have risen by 3 degrees Celsius over the last 40 years, a rise most scientists put down to a combination of man-made climate change, natural cycles and the fact that as snow and ice melt to reveal land and water the darker, uncovered areas absorb more heat.
The precise impact of the melt is not yet known, but the Siberian bogs hold an estimated 70 billion tonnes of methane, a greenhouse gas 20 times more potent than carbon dioxide. (First reported August 2005)