Submitted by: Michael G. McManus (FG Staff Journalist)

By Steve Connor, Science Editor, The Independent (UK Newspaper)

Six scientists from some of the leading scientific institutions in the United States have issued what amounts to an unambiguous warning to the world: civilization itself is threatened by global warming.

They also implicitly criticize the UN’s Intergovernmental Panel on Climate Change (IPCC) for underestimating the scale of sea-level rises this century as a result of melting glaciers and polar ice sheets.

Instead of sea levels rising by about 40 centimeters, as the IPCC predicts in one of its computer forecasts, the true rise might be as great as several meters by 2100. That is why, they say, planet Earth today is in “imminent peril”.

In a densely referenced scientific paper published in the Philosophical Transactions of the Royal Society A some of the world’s leading climate researchers describe in detail why they believe that humanity can no longer afford to ignore the “gravest threat” of climate change.

“Recent greenhouse gas emissions place the Earth perilously close to dramatic climate change that could run out of control, with great dangers for humans and other creatures,” the scientists say. Only intense efforts to curb man-made emissions of carbon dioxide emissions and other greenhouse gases can keep the climate within or near the range of the past one million years, they add.

The researchers were led by James Hansen, the director of NASA’s Goddard Institute for Space Studies, who was the first scientist to warn the US Congress about global warming.

The other scientists were Makiko Sato, Pushker Kharecha and Gary Russell, also of the Goddard Institute, David Lea of the University of California, Santa Barbara, and Mark Siddall of the Lamont-Doherty Earth Observatory at Columbia University in New York.

Read the full story from The Independent