World 'must step up preparations for extreme heat'

Rising temperatures may be hitting faster and harder than forecast, say climate scientists in wake of heatwave in US and CanadaThe world needs to step up preparations for extreme heat, which may be hitting faster and harder than previously forecast, a group of leading climate scientists have warned in the wake of freakishly high temperatures in Canada and the US.Last week's heat dome above British Columbia, Washington state and Portland, Oregon smashed daily temperature records by more than 5C (9F) in some places - a spike that would have been considered impossible two weeks ago, the experts said, prompting concerns the climate may have crossed a dangerous threshold. Continue reading...