Peruvian inventor Eduardo Gold came up with the idea that painting mountains white could reflect the sun’s rays and help to preserve Peru’s glaciers. Peru has 70% of the world’s tropical glaciers.

Gold was the winner of a “100 Ideas to Save the Planet” competition and received $200,000 to fund his idea. While the egg whites and lime paint may help to slow glacial melt, it isn’t a cure for global warming. Advocates say painting mountains white may help to buy time while long-term solutions are worked out.