U.S.A. 17


ENERGY USE AROUND THE WORLD


This nighttime image of the world was taken from space. It shows where electricity lights up our world and where it does not.


Life on the Grid Remember that grid? T e bright lights on this map show areas where people live on the grid. T ey get most of their energy from fossil fuels. Burning fossil fuels uses up Earth’s


resources. It also releases a lot of carbon dioxide and other materials, which harm the environment. T ey create a layer of gases in the atmosphere. T is layer traps the sun’s energy close to Earth, which warms Earth’s overall climate.


18


SOUTH AFRICA 2


BRAZIL 1


Carbon Footprint A country’s carbon footprint summarizes the amount of fossil fuels a country uses. People in countries with larger carbon footprints use more fossil fuels for everyday tasks from cooking to running factories. Countries with smaller carbon footprints


use energy, too. T ey burn biomass, like wood, dried plants, and animal dung. T ey burn it for cooking and heat. Burning biomass also releases carbon dioxide. T is energy use aff ects Earth, too.


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