The clearest evidence yet is emerging that climate change is real and is having potentially enormous impact. An explorer trekking across the ice cap taking over 1500 readings discovered an average thickness of only 1.8m, typical of ice frozen in the current year, rather than the thicker depths of multi year permafrost. This means that come summer we have the real prospect of an arctic free from ice within 10 years. Read more here . This survey ties in closely with the WWF view of the arctic being ice free in 20 years but with the larger part of that development happening in the next 10 years. As always, there are people quick to jump up an find contrary evidence, and it is important to weigh up all the facts and ensure we are not conned into a knee jerk reaction to one piece of news, but in general the news flow indicates that we are reaching the point of no return, the time for action is now. All countries have the ooportunity to do something about this – but who among them has the political will to drive this forward? Lets hope the UN Summit is a call to real action, and not just a shop of hollow promises.