Temperatures could spiral to 70C (158F) – transforming Earth into a “hostile environment devoid of food and water”, scientists warn – as the first ever supercomputer climate models are published, projecting a “very bleak distant future” for humanity.

Extreme global warming will likely wipe all mammals – including humans – off the face of the Earth in 250 million years, according to a new scientific study.

The planet would heat up to such an extent that many mammals would be unable to survive – and the Earth’s continents would merge to form one hot, dry, uninhabitable supercontinent.

The apocalyptic projections are from the first-ever supercomputer climate models.

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