330K views · 6K reactions | Does Machu Picchu hold more secrets than previously thought? #HistorysGreatestMysteries explores the ancient ruins, tonight at 9/8c. | HISTORY | Facebook

14K views · 313 reactions | Will underwater exploration unearth Cleopatra's missing tomb? Find out more tonight at 9/8c with a new episode of #HistorysGreatestMysteries. | HISTORY | Facebook

118 reactions · 12 shares | Is it a good thing for the president to speak directly to the American people or does that give them too much power? Chapman University Professor Lori Cox Han discusses how television and the internet changed White House communications strategies. Watch, Saturday 12/2 at 8pm ET on C-SPAN 2 https://www.c-span.org/video/?530145-1/television-internet-white-house-communications | American History TV | Facebook