The cruise ship Viking Sky after it sent out a mayday signal, off the west coast of Norway. Photograph: Odd Roar Lange/NTB scanpix via AP

Rescue helicopters have evacuated dozens of people from a luxury cruise ship which suffered engine failure on Saturday in stormy weather off the west (...)

The sea off the north coast of Greenland is normally so frozen that it was referred to, until recently, as “the last ice area”.  Photograph: iStock

The oldest and thickest sea ice in the Arctic has started to break up, opening waters north of Greenland that are normally frozen, even in summer. Th(...)

A fountain on St Peter’s square is covered with ice at the San Pietro square, Vatican City. Photograph: EPA/Giorgio Onorati

Heavy snowfall and below-freezing temperatures have swept parts of mainland Europe, causing more than a dozen deaths, grounding planes and halting fe(...)

Worldwide, this year is set to be the warmest on record, driven up by man-made greenhouse gas emissions and a powerful El Nino weather event in the Pacific Ocean.

Temperatures around the North Pole came close to melting point on Thursday as a freak blast of warm air blanketed an Arctic region usually deep frozen(...)

Irish Naval vessel LÉ Niamh with the NUIG sensors attached at the bow to measure ocean surface information. Photograph: Brian Ward

The Naval Service patrol ship LÉ Niamh is not only rescuing refugees in the Mediterranean. It is also gathering information for a marine research pr(...)