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(...)

Heatwaves like the record-breaking 2017 event in central and eastern China were once rare. They are now one-in-five-year events due to climate change. Photograph: Alex Kraus/Bloomberg

Civilisation is increasingly out of sync with the world’s changing climate, as heatwaves, such as those in the Mediterranean and in China during 2017,(...)

Storm Gertrude hit Ireland in 2016. File photograph: Erick Luke/The Irish Times

New research is revealing why and how Europe is vulnerable to “explosive” and sustained weather events, a conference in Dublin has heard. Speaking at(...)

Recent years feature in the top 10 of wettest winters and wettest summers over three centuries. Photograph: David Sleator

What is believed to one of the largest compilations of weather records in the world – showing monthly rainfall levels in Ireland stretching from the p(...)

Contrails: the jet streams wrapped around the planet are broad rivers of wind often thousands of kilometres long, shifting between north and south as seasons change. Illustration: Michael Viney

Between the slashing hail squalls borrowed from Canada’s winter, I kept an eye on the sky above the mountain, looking for contrails speeding far too f(...)