France, July 12 -- As climate change drives temperature increases across Europe, heatwaves are becoming more frequent and more intense. While the mercury has not yet hit 50C in France, a group of researchers is giving people the chance to experience life at that temperature, touring the country with a heated container in tow.

"I feel as though I need to take deeper breaths, even though I'm not making much of an effort," says Martin Estivals, after a few minutes of walking on a treadmill in the Climate Sense heat chamber.

The chamber is a container on a lorry that has been travelling around France for the past few months. Inside it looks like a doctor's office, with treadmills at one end. The ambient temperature is a steady 50C.

The highe...