The Chicago  skyline as seen from the North Avenue Beach at Lake Michigan, as  the polar vortex has descended on much of the central and eastern United States. Photograph: Pinar Istek/Reuters

The cold front bringing its icy grip to parts of the US and Canada is a result of a weather condition called a polar vortex. It might seem counter-in(...)

Rare female white lobster caught off Mizen Head, west Cork by the vessel “Fair Maiden”. Photograph: Niall Duffy/West Cork Photo

The whole country may have spent the past month basking in sunshine and getting as red as the proverbial lobster but for west Cork fisherman Donagh O’(...)

Rannoch Moor in the central Scottish Highlands, was the epicentre of the last ice cap in Scotland. Photograph: Gordon Bromley.

Ireland and Britain could experience a sudden switch to “extreme seasonality” – in the form of far colder winters and much warmer summers – as a resul(...)

 Rockefeller University biologist Michael Young (centre) walks on campus with his wife Laurel Eckhardt and university president Richard Lifton after winning the Nobel Prize in Physiology. Photograph: Spencer Platt/Getty Images

Three Americans have won the Nobel Prize in Physiology or Medicine for their discoveries about the body’s biological clock – opening up new fields of (...)