British adventurer Lewis Gordon Pugh is campaigning for climate change solutions and against growing CO2 emissions by attempting to be the first person to swim in the North Pole.

On July 15, Mr Pugh plans to swim a 1 km stretch in the -1.8C polar water wearing only goggles, a swimcap and speedos. This has never been done before, because the water used to remain frozen throughout the year.

More on the thrill seeking and obviously warm-blooded Mr Pugh here.