216K views · 4.4K reactions | Henry Louis Gates Jr. helps actors Edward Norton and Julia Roberts discover their hidden connections to history—and each other. Stream the season premiere of #FindingYourRoots now on the PBS app. | PBS | Facebook

241K views · 555 reactions | How did we come up with our system of telling time? Why do we divide the day into 24 hours of 60 minutes each, and put 60 seconds in each minute? Where does the definition of a second come from? And who decides what clock shows the correct time? There’s clearly a lot of questions when it comes to time. | Be Smart • PBS | Facebook

528K views · 399 reactions | In 1969, humanity paused and looked skyward to witness the impossible. Fifty years later, pause once again. CHASING THE MOON premieres across three nights, beginning July 8 on PBS → pbs.org/chasingthemoon | American Experience | PBS | Facebook