SAN CARLOS, COSTA RICA - MARCH 27: A worker fixes an eco-friendly tourist trail on private property as the Costa Rican Electricity Institute (ICE) has managed to produce all of the electricity for the nation from renewable energy sources for more than 80 days straight on March 27, 2015 in San Carlos, Costa Rica. The remarkable milestone has been reached with the use of hydroelectric power plants and a combination of wind, solar, and geothermal energy. (Photo by Joe Raedle/Getty Images)
