People inside the climate change

Citizen scientist Wilmer Sánchez Rodríguez collects snow and ice samples to measure the impact of black carbon deposits on at-risk tropical glaciers in the Cordillera Blanca range of the Peruvian Andes. Black carbon particles absorb more light and drastically increase the rate at which glacial ice melts, disappearing a critical water source for Andean people who are also in the midst of drought.PHOTOGRAPH BY COURTNEY CECALE, NATIONAL GEOGRAPHIC YOUR SHOT