Scientists have said the record temperatures in the UK last week would have been 'almost impossible' without human-induced climate change.
The scientists use a combination of looking at temperature records dating back through time, and complex mathematical models that assess how human-caused climate change affects the weather.
That allows the scientists to compare the two different scenarios - a world with 1.1C of warming and a world without that temperature increase.Dr Otto says if we want to keep this type of a heat a rare event, the UK must reach net zero "very soon". That is the point at which we stop adding to the amount of greenhouse gases in the atmosphere. The government's target is to reach net zero by 2050.
Climate change is affecting all parts of the globe, with extreme heat this year affecting countries including India, the US, Australia, Spain and Germany. "The climate has already changed - we are and will continue to suffer the consequences of government inaction," Greenpeace UK's head of climate, Rosie Rogers, told BBC News. "How bad things get depends on how much or little governments now decide to do to get off fossil fuels."
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