Professor Peter Donnelly, of Oxford University, said the Welsh carry DNA which could be traced back to the last Ice Age, 10, 000 years ago.

BBC: Welsh people could be most ancient in UK, DNA suggests

He was born and raised in Buffalo, New York, where a boy is so lucky because he can play ice hockey outdoors 10 to 11 months a year.

CNN: Blackhawks making history whether you like it or not

The estimated volume of the north ice cap is about 10 times less than the minimum volume of an ancient ocean that some scientists believe once existed on Mars.

BBC: By BBC News Online Science Editor Dr David Whitehouse