Science and Environment

Daring to seek Earth’s history contained in glaciers atop the tallest mountains in the world, Doctor Lonnie Thompson’s life’s work evolves into a salvage mission to recover priceless historical records before they disappear forever. See viewing options here. 2023 (1h 44m)

The U.S. recently set an ambitious climate change goal: zero carbon emissions by 2050. And to achieve that, slash emissions in half by 2030. Is it possible? And what kind of technology would it take? Meet scientists and engineers who are convinced we can achieve carbon zero in time to avoid the biggest impacts of…