The shale gas revolution is changing global energy markets. Shale gas and other unconventional gas resources can provide energy for over 250 years. Natural gas is a secure, clean, and competitive fuel that is well-suited to meet growing energy demand while addressing environmental concerns. As a flexible, affordable source of electricity, natural gas can enable increased adoption of variable renewable resources like wind and solar. When used for transportation and power generation, natural gas emits fewer emissions than coal and oil. With continued technology advances, natural gas can help ensure sustainable economic growth and development through reliable energy access.