The declaration, based on analysis of more than 40 years of publicly available data, came as Donald Trump officially left the Paris Climate Accord and Boris Johnson failed to honour Parliament’s own ‘Climate Emergency’ vote.
With a hand-delivered letter, the US is the first nation to pull out of the deal. Agreement rules prevented any country from pulling out in the first three years after ratification on November 4 2016.
The missed target comes as an opinion poll revealed that most Brits say climate change will influence their general election.
Labour has also gone on the attack on Boris Johnson after the government failed to bring urgent plans to tackle the climate and environment emergency in time to meet the six month deadline set by parliament.
The 16-year-old had declined another award in 2018 because many of the finalists had to fly to Stockholm for the ceremony.
The Duchess of Sussex attended the One Young World conference opening ceremony on Tuesday.
They are marching, flying and hopping in their droves because of climate change, say scientists.
We are stuck in a fossil-fuel economy and without systemic change, our lifestyles will keep on causing climate and ecological harm.
The latest action is part of two weeks of disruption demanding urgent moves to protect wildlife and the climate.