This photograph shows a health center at the Science City Campus of the University of Lille, in Villeneuve-d'Ascq, northern France, on April 30, 2026. (Photo by Sameer Al-DOUMY / AFP via Getty Images)

Students sit on a bench at the Science City Campus of the University of Lille, in Villeneuve-d'Ascq, northern France, on April 30, 2026. (Photo by Sameer Al-DOUMY / AFP via Getty Images)

This photograph shows the M1 building at the Science City Campus of the University of Lille, in Villeneuve-d'Ascq, northern France, on April 30, 2026. (Photo by Sameer Al-DOUMY / AFP via Getty Images)

This photograph shows the M3 building at the Science City Campus of the University of Lille, in Villeneuve-d'Ascq, northern France, on April 30, 2026. (Photo by Sameer Al-DOUMY / AFP via Getty Images)

This photograph shows the SN2 building's damaged facade at the Science City Campus of the University of Lille, in Villeneuve-d'Ascq, northern France, on April 30, 2026. (Photo by Sameer Al-DOUMY / AFP via Getty Images)

Ernest Malalad, chief science research specialist of the Philippine Space Agency (PhilSA) points to a satellite photo of areas affected by nitrogen oxides, at the PhilSA headquarters in Manila on April 30, 2026. The fire at Metro Manila's Navotas landfill is largely invisible to the naked eye, combusting as deep as 15 metres (50 feet) below the surface and releasing a toxic brew of methane as well as carbon dioxide. (Photo by Ted ALJIBE / AFP via Getty Images) / To go with "PHILIPPINES-FIRE-WASTE-ENVIRONMENT-POLLUTION, REPORTAGE" BY PAM CASTRO

HOHENFELS, GERMANY - APRIL 30: A Neros Technology Archer FPV attack drone flies during the "Combined Resolve" military exercise at the U.S. Army 7th Army Training Command Joint Multinational Readiness Center on April 30, 2026 in Hohenfels, Germany. The 7th Army Training Command Joint Multinational Readiness Center, located in Bavaria, is among the main training grounds for U.S. Army Europe and Africa combat scenarios. U.S. President Donald Trump, irritated by recent comments by German Chancellor Friedrich Merz, has threatened to pull U.S. troops out of Germany. (Photo by Sean Gallup/Getty Images)

TOPSHOT - German Chancellor Friedrich Merz speaks during the German National Maritime Conference in Emden, northern Germany, on April 29, 2026. The National Maritime Conference (NMK) is the Federal Government's central event for supporting the maritime industry, attended by around 800 representatives from business, politics and science, and has established itself as a driver of new ideas and a platform for exchange. It has been held every two years since 2000. (Photo by FOCKE STRANGMANN / AFP via Getty Images)