Current levels of the greenhouse gases carbon dioxide and methane in the atmosphere are higher now than at any time in the last 650,000 years.
That is the conclusion of new European studies looking at ice taken from 3km below the surface of Antarctica.
From a story yesterday on BBC News:
"We find that CO2 is about 30% higher than at any time, and methane 130% higher than at any time; and the rates of increase are absolutely exceptional: for CO2, 200 times faster than at any time in the last 650,000 years," said project leader Thomas Stocker from the University of Bern, Switzerland.
Another study reported in the same journal claims that for the last 150 years, sea levels have been rising twice as fast as in previous centuries.
"The main thing that's changed since the 19th Century and the beginning of modern observation has been the widespread increase in fossil fuel use and more greenhouse gases," said Kenneth Miller from Rutgers University.
This is not good news, but it is additional evidence to confirm the belief that anthropogenic climate change is a very real and very serious problem.