Global warming fastest in 20,000 years, and it is mankind's
fault (From the UK's Independent Online) Global warming is made
worse by man-made pollution and the scale of the problem is
unprecedented in at least 20,000 years, according to a draft
report by the world's leading climate scientists. The leaked
assessment by the group of international experts says there is
now overwhelming evidence to show that the Earth's climate is
undergoing dramatic transformation because of human activity. A
draft copy of the report by a working group of the
Intergovernmental Panel on Climate Change (IPCC) states that
concentrations of carbon dioxide, methane and other greenhouse
gases are at the highest for at least 650,000 years. It predicts
that global average temperatures this century will rise by
between 2C and 4.5C as a result of the doubling of carbon
dioxide levels caused by man-made emissions. These temperatures
could increase by a further 1.5C as a result of "positive
feedbacks" in the climate resulting from the melti