Amid the celebratory atmosphere, with Leonardo DiCaprio scheduled to appear, leaders and scientists agreed: the measures covered by the Paris agreement still fall far short of reaching the goal of limiting temperature rise to 1.5C to 2C above pre-industrial levels, and time is running out.
Last year was the hottest year since record keeping began in 1880. Temperatures for the first three months of this year have already demolished that record – confounding scientists by the scale and pace of temperature rise.
In the Arctic, there was almost no winter, with temperatures at the North Pole rising above freezing even in December, the depths of the polar night. Temperatures were 30C above normal.
On Australia’s Great Barrier Reef, some 93% of coral showed evidence of bleaching, because of long term ocean warming due to carbon emissions, and the El Niño weather phenomenon.
Learn more: Paris climate deal signing ceremony: what it means and why it matters?

