The actions we take to stay at home, wash our hands and social distance have a national effect and enable government policy to produce an impact. Photograph: Getty

Two newlyweds from Ireland travelled to the east coast of Canada to start a new life 50 years ago – unaware that next door in the US Senator Gaylord N(...)

Chinese president Xi Jinping and US president Barack Obama formally commit to the Paris agreement in September 2016. Photograph: Stephen Crowley/The New York Times

Land temperatures up, ocean temperatures up, and so too the levels of carbon dioxide and other greenhouse gases implicated in causing climate change.(...)