From Ancient Greece to a New Mexico canyon, Sacred Sites exist the world over. Tour some of the most inspiring locations with a marathon starting at 5 today. http://bitly.com/Sacred-Sites

Mary Beard introduces us to Pompeii’s showiest family, who plastered their name all over town in an effort to gain political power some 2,000 years ago. From Pompeii: The Dead Speak.
https://youtu.be/j4fDo1-2v5Q

Kahiltna Glacier is best known as the landing strip for climbers looking to scale Denali, but the icy plain is gorgeous in its own right. See more of Alaska’s majestic wilderness on Aerial America tonight at 8: http://bitly.com/AerialWildAlaska

Built to protect China from enemy invaders, the Great Wall has stood for over 2,000 years, but never actually kept anyone out. Get more Secrets of one of the world’s greatest structures in a full episode online now: http://bitly.com/WallSecrets

Watch a bumble bee make his pollination rounds in slow motion in this mesmerizing clip from Secrets of the Hive.
https://youtu.be/J7q9Kn1rhRc

When this whale shark got tangled in a fishing rope, all it took was a little compassion and some surprising calm to free him from his torment. Watch the amazing video from Secrets of Shark Island.
https://youtu.be/bYxsoLELIuI

When William Marston set out to create a new superhero in 1941, his wife said, “Fine, but make her a woman.” So he modeled his character, Wonder Woman, on the strongest woman he knew: her. From Seriously Amazing Objects.
https://youtu.be/H98Q44vwxbk

A holy biblical relic, believers claim the spear of destiny brings victory to those who possess it. Could there be any truth to the legends? Secrets investigates tonight at 10. http://bitly.com/SpearSecrets

Who would be Ben Franklin's Facebook friends? This scholar is mapping the Founding Father’s social network, helping us better understand his place in the world. From Genius in America.
https://youtu.be/EnJK-QtOJh4

Christer Holmgren has spent more than 30 years searching for the true identity of England’s most notorious serial killer, Jack the Ripper. See what his dedication has uncovered, from The Missing Evidence.
https://youtu.be/DijxQkCpALY

Margaret Howe’s unorthodox research led us to a deeper understanding of dolphin intelligence, before controversy shut the experiment down. Watch The Girl Who Talked to Dolphins in full now: http://bitly.com/DolphinGirl

The April 2015 quake in Nepal was the worst disaster to hit the country in more than 80 years, with damage estimated at half the country’s entire GDP. Was the tragedy completely inevitable? Hear from survivors and experts tonight at 10 on Nepal Quake: Terror on Everest. http://bitly.com/EverestQuake