The 2004 Indian Ocean Tsunami, one of the deadliest disasters in recent history, claimed more than 220,000 lives across 14 countries. Tsunamis are unpredictable and can arrive within minutes or hours, impacting multiple ocean basins. In response, UNESCO and its Intergovernmental Oceanographic Commission took the lead in developing a coordinated global early warning system. has developed a global early warning system relying on a dense network of sensors, tide gauges, and regional warning centers

During the Ottoman Empire, slaves were people of different races, and skin color did not mark a person as free or enslaved. As a result, their descendants, unlike those of enslaved Africans, did not face centuries of racism and discrimination. A new episode of One Thousand Years of Slavery airs tonight at 8 PM. #1000YearsOfSlavery | Smithsonian Channel