Alberto Amato, Ludovic Gielly and Jade Ezzedine of the Cell and Plant Physiology Laboratory of Grenoble take samples of the Sanguina nivaloides algae, also known as "snow blood" and which presence accelerates snowmelt at the Brevent in Chamonix, France, June 14, 2022. Picture taken June 14, 2022. REUTERS/Denis Balibouse
