Natural gas is used around the world today to heat homes and cook. But this natural resource didn't become a major source of energy until the 1960s! Readers explore what natural gas is, how it's found, and how it's used in this informative book--and there's a lot to learn! The text highlights the most relevant and engrossing information, while graphic organizers help readers identify the most important concepts. Sidebars and fact boxes emphasize important ideas and terms while full-color photographs show readers natural gas mining up close.