Eric Marechal, researcher at the Cell and Plant Physiology Laboratory at CEA and coordinator of the ALPALGA consortium, takes a picture with a microscope 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
