KTTZ-DT How discoveries over the past 50 years have revolutionized people's understanding of the universe. 2026-05-10 The story behind David Attenborough's wildlife documentary series "Life on Earth," which changed his life forever. 2026-05-10 In humankind's conquest of planet Earth, improbable allies -- species recruited from nature -- are relied on to help defeat adversaries. 2026-05-10 Experts analyze prominent international affairs topics and America's role in a shifting world. 2026-05-10 Science, health, technology and environment experts and professionals address issues such as artificial intelligence, medicine and climate science. 2026-05-10 Day trips around Texas. 2026-05-10 Experiencing Texas through the perspective of a storyteller. 2026-05-10 Sister Veronica weighs her future with the Order; Dr. Turner makes a final stand against the council's news before the maternity home closes; the Mullucks campaign for the rights of all thalidomide victims. 2026-05-11