A pharmacy sign indicates 32 degrees Celsius around 11h45 am in Paris as a record-breaking early heatwave scorches a swathe of western Europe on May 28, 2026. The UK and France have reported their hottest ever May days this week as a "heat dome" brought sizzling temperatures more typical of midsummer to western Europe. UN climate chief Simon Stiell said the heatwave was "a brutal reminder of the spiraling impacts of the climate crisis. "The science is clear that human-induced climate change is making these heatwaves more frequent and extreme," Stiell add in a statement. (Photo by SIMON WOHLFAHRT / AFP via Getty Images)

French AI developer Mistral's co-founder and CEO Arthur Mensch speaks during the opening keynote of Mistral's "AI Now Summit" event at the Carrousel du Louvre in Paris on May 28, 2026. (Photo by STEPHANE DE SAKUTIN / AFP via Getty Images)

French AI developer Mistral's co-founder and CEO Arthur Mensch speaks during the opening keynote of Mistral's "AI Now Summit" event at the Carrousel du Louvre in Paris on May 28, 2026. (Photo by STEPHANE DE SAKUTIN / AFP via Getty Images)

French AI developer Mistral's co-founder and CEO Arthur Mensch speaks during the opening keynote of Mistral's "AI Now Summit" event at the Carrousel du Louvre in Paris on May 28, 2026. (Photo by STEPHANE DE SAKUTIN / AFP via Getty Images)

French AI developer Mistral's co-founder and CEO Arthur Mensch speaks during the opening keynote of Mistral's "AI Now Summit" event at the Carrousel du Louvre in Paris on May 28, 2026. (Photo by STEPHANE DE SAKUTIN / AFP via Getty Images)

A pharmacy sign indicates 32 degrees Celsius around 10h30 am in Paris as a record-breaking early heatwave scorches a swathe of western Europe on May 28, 2026. The UK and France have reported their hottest ever May days this week as a "heat dome" brought sizzling temperatures more typical of midsummer to western Europe. UN climate chief Simon Stiell said the heatwave was "a brutal reminder of the spiraling impacts of the climate crisis. "The science is clear that human-induced climate change is making these heatwaves more frequent and extreme," Stiell add in a statement. (Photo by SIMON WOHLFAHRT / AFP via Getty Images)

A person lies in the shadow of a tree in a parc in Paris as a record-breaking early heatwave scorches a swathe of western Europe on May 28, 2026. The UK and France have reported their hottest ever May days this week as a "heat dome" brought sizzling temperatures more typical of midsummer to western Europe. UN climate chief Simon Stiell said the heatwave was "a brutal reminder of the spiraling impacts of the climate crisis. "The science is clear that human-induced climate change is making these heatwaves more frequent and extreme," Stiell add in a statement. (Photo by SIMON WOHLFAHRT / AFP via Getty Images)

Deutsche Bank CEO Christian Sewing (C) talks to Deutsche Bank CFO Raja Akram and Chief for Technology, Data and Innovation of the Management Board Marie-Jeanne Deverdun on stage during the company's annual shareholder meeting on May 28, 2026 in Frankfurt am Main, western Germany. (Photo by Hannes P. Albert / AFP via Getty Images)