3.5K views · 444 reactions | The history of UFO sightings in North America goes back nearly 80 years. Explore the timeline of some of the most famous sightings and listen to testimonials from witnesses and the experts who dedicate their careers into uncovering the mysteries behind them. Solve the unknown in the brand new series, UFOs: Investigating The Unknown, Tuesdays at 8pm on National Geographic UK. | National Geographic UK | Facebook

9.9K views · 162 reactions | In February 1945, the Japanese Empire was being dismantled. But even with its decimated fleet and shrinking defensive ring, Japan still posed a serious threat—a reality laid bare during the brutal Battle of Iwo Jima. This is World War II in 2 with John Curatola, PhD, Samuel Zemurray Stone Senior Historian at The National WWII Museum. | The National WWII Museum | Facebook