K26CS-D Archaeological investigations into the origins of democracy in Greece 2,500 years ago; mass graves and ancient ruins where tyrants were murdered shine light on the birth of a revolutionary form of government. 2026-05-05 David Attenborough explores plants in the tropical rain forest. 2026-05-05 Politicians from different parties collaborate on climate and energy challenges; with Kay Bailey Hutchison and Joe Manchin. 2026-05-05 Native Americans build energy projects on tribal lands to change their future; with CEO Cheri Smith, Alliance for Tribal Clean Energy and COO Ken Ahmann, Colusa Indian Energy. 2026-05-05 A detailed look into news stories from around the world from the BBC news desk in Washington, D.C. 2026-05-05 Presenting a round-up of the most recent news and developments from across the world. 2026-05-05 Co-anchors Amna Nawaz and Geoff Bennett and correspondents offer in-depth analysis of current events. 2026-05-05 Actor Michael Douglas and writer/director Lena Dunham explore their family roots. 2026-05-06