Think Wednesday | May 22, 2019 Preview
Preview | 30s | Video has closed captioning.
Travel around the world with NATURE to uncover the history of mankind’s relationship with the horse. On NOVA, bioarchaeologists investigate a ninth-century mass grave thought to hold a lost Viking army. Breakthrough: The Ideas That Changed the World continues as we dial in to the story of how Alexander Graham Bell’s invention became the smartphone as we know it.
Aired: 05/22/19
