Summer temperatures in the high arctic would have to have been as much as 12 degrees warmer than they were in our pre-global warming world in order to support a forest there.

FORBES: Drowning Polar Bears And the Return Of Ursus Bogus

Analyses suggest that pledges made in Copenhagen, if implemented fully, would put the Earth on course for 3C or even 4C of warming since pre-industrial times, rather than the 2C that many countries say they want to stay below.

BBC: New UN climate chief calls for more ambition

It is increasingly unlikely that global warming will be kept below an increase of 2C (3.6F) above pre-industrial levels, a study suggests.

BBC: Carbon emissions are 'too high' to curb climate change

When we were doing the pre-match stuff on the corner of the pitch last Sunday Jonathan Davies looked at Banahan warming up and said there was no way physically he could high tackle him because he would not be able to reach.

BBC: Six Nations: Jeremy Guscott on Ireland v England

Mahmood, warming the seat until compatriot Saqlain Mushtaq arrives, was superb in keeping the division one pre-season favourites in the hunt.

BBC: Mahmood gives Surrey hope

In the peak period from 1906 to 1910, the warming effect of the industrial soot throughout the Arctic was estimated at eight times that during the pre-industrial period.

BBC: Human activities have left a visible mark on the Arctic

It sure would be helpful if we could hire people to repair 70, 000 bridges, establish pre-nursery schools for every 4 year old kid, attack the environmental problems that emanate from global warming, and welcome valuable immigrants from around the globe.

FORBES: The Biggest Fib of 2013; We Have Reduced "the Deficit by More Than $2.5 Trillion"