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Last summer saw intense heatwaves across the world. And already this year, global air, surface and sea temperatures have hit the highest levels on record. China, India and the US are currently experiencing heatwaves. In June, the UK鈥檚 Met Office released a health warning because of the high temperatures.

In this episode Gaia Vince investigates what causes heatwaves and how hotter weather impacts our health. She finds out how we can prepare ourselves as the temperatures rise.

Gaia is joined by Peter Stott at the Met Office Centre for Climate Prediction, who reveals more about the forecast and what causes heatwaves.

She also speaks to Bob Ward, policy director at the Grantham Research Institute on Climate and the Environment, who gives us the lowdown on the UK鈥檚 heat health warning system and says what the future could look like if we continue to miss climate targets.

In addition, Dann Mitchell, professor of climate science at the University of Bristol, discusses the health impacts of extreme heat.

Guillermo Rein, professor of fire science at Imperial College London, explains what sparks wildfires and how they spread.

Elsewhere, Germany has launched a high-tech heat health warning system to warn people when the temperatures are rocketing. Gaia speaks to Andreas Matzarakis, from Albert Ludwig University in Freiburg, who developed the system.

Presenter: Gaia Vince
Producer: Harrison Lewis
Content Producer: Alice Lipscombe-Southwell
Assistant Producer: Robbie Wojciechowski
Editor: Richard Collings