The second in series charts the story of exploration in the 20th century. 20th-century exploration began with flag planting in the name of empire, and over the decades, improvements in technology saw explorers take on greater and greater challenges - pursuing prizes from the poles, to the highest points on earth - and beyond. The incredible individuals who took humankind to the limits of what was thought possible also oversaw an evolution - as time...

The team investigates Nikola Tesla's final residence, The New Yorker Hotel, and find incredible evidence that it served as much more than a home to the controversial inventor. They also travel to Wardenclyffe, Tesla's infamous, abandoned laboratory.

While Prohibition made it to illegal to sell, transport or make alcohol in the United States, the top brass in the US Congress were able to stay well-lubricated – thanks to the nefarious work of famed bootlegger, George Cassiday.

In the late 1800s, Maggie Walker, an African American community leader, helped establish a sanitarium for tuberculosis patients, a community center, and an educational loan fund, among other humanitarian projects. She was also the first woman in the United States to become founder and president of a chartered bank.

Geronimo, broken-hearted after a failed romance, sets out with his family to explore the Eighth Wonder of the Mouse World. I, Geronimo Stilton, was in love! I went out for a cup of coffee one morning and laid eyes on the most beautiful rodent I'd ever seen. Unfortunately, I immediately tripped over my paws and ended up with my tail in a toaster! I was one mortified mouse. But I was determined to prove that I wasn't a complete stumblemouse. So I decided...

National Geographic Explorer-at-Large Dr. Robert Ballard is planning an expedition to solve the mystery of the disappearance of Amelia Earhart. Expedition Amelia follows the clues that have led Ballard to a remote island in the Pacific and delves into Earhart herself, especially how she became one of the most intriguing and inspirational figures in history.

In 1919, two World War I flying aces climbed into the open cockpit of a converted Vicker's Vimy and embarked on the world's first non-stop transatlantic flight, touching down after 16 grueling hours on the west coast of Ireland. Their story is interwoven with the story of two modern-day pilots who retrace Alcock and Brown's pioneering flight in a modern Diamond DA42 Twin Star.

This film offers an in-depth portrait of the man who created the atomic bomb and changed the world forever. Featuring interviews with the widely respected authors and historians Alexander Larman and Guy Walters, the film also explores Oppenheimer's later preoccupation with the potential dangers that scientific inventions could pose to humanity.

Lost on Everest shines a light on what happened to Andrew “Sandy” Irvine and George Leigh Mallory, who set out to attempt the first true summit of Mount Everest in 1924. A team of professional climbers, filmmakers and experts led by journalist Mark Synnott and Nat Geo photographer Renan Ozturk attempts to discover whether Irvine and Mallory successfully conquered the world’s tallest mountain.