Russian President Vladimir Putin today said climate change was unstoppable and not caused by human activity and urged countries to adapt to global warming. One day after he visited the Franz Josef Land archipelago in the Arctic, Putin claimed that icebergs had been melting for decades and suggested that global warming was not mankind's fault.<br/>'<br/>Putin said the warming had already started by the 1930s. His comments came in a broadcast from an Arctic forum held in the northern Russian city of Arkhangelsk.'<br/>'<br/>The Kremlin strongman added that the issue is not stopping it, because that's impossible, since it could be tied to some global cycles on Earth or even of planetary significance. The issue is to somehow adapt to it, he said.