Current TV plans to air a presentation on climate change by former vice president Al Gore.
The live broadcast of Gore's multimedia talk begins Thursday at 7 p.m. Eastern time. The cable network said Monday it will culminate a worldwide, 24-hour initiative called "24 Hours of Reality," designed to explore the scope and impact of global warming.
In addition to its TV broadcast, Current will present a live Internet feed of "24 Hours of Reality" starting Wednesday at 8 p.m. Eastern time. It will feature 23 different citizen-activists from different parts of the world, beginning in Mexico City.
Gore is a Nobel laureate for his environmental activism and is chairman of Current TV.