In this file photo taken on October 12, 2011, an alpinist heads down a ridge on the Aiguille du Midi (3,842 meters; 12 605 feet), towards the Vallee Blanche on the Mont Blanc massif, in the Alps, near Chamonix. French President Emmanuel Macron declared the battle against climate change and environmental destruction to be “the fight of the century” Thursday Feb. 13, 2020 after visiting a melting glacier in the Alps. (Photo by David Azia/AP Photo/File)
