This photograph shows used nitrous oxide canisters during the recycling process, at DI Services' recycling factory in Saint-Pathus, north-east of Paris on May 7, 2026. In this noisy warehouse in Seine-et-Marne, canisters of nitrous oxide pile up by the thousands as beyond the public health scourge by the diversion of its use as "laughing gas" in party and recreational settings, it poses a colossal environmental challenge to gather and recycle these bottles which are abandoned all over France. (Photo by Thomas SAMSON / AFP via Getty Images)