National Geographic Executive Editor Dennis Dimick will explain climate change in layman's terms on Monday, April 28. Photograph by Mark Thiessen

This new National Geographic Live! series presents people who are making a difference by conserving and protecting natural resources and the environment, and by raising awareness of environmental issues.

National Geographic EcoSessions is available for purchase as a five-part series with discounted pricing, or as individual events. Purchase as a series and save! (Series: Member $60, Nonmember $72, Single Event: Member $15, Nonmember $18)