41K views · 149 reactions | This weekend on Lectures in History, The George Washington University professor Chad Heap teaches a class about the origins of the gay rights movement. Watch the full program on Saturday at 8 pm and midnight ET on C-SPAN 3 | American History TV | Facebook

6.9K views | Reel by Ham Radio Prep

205K views · 348 reactions | Where do artificial flavors come from? Well whether it’s your average store bought yogurt, granola bar, or even butter, a lot of food we eat today is full of artificial flavoring. Why did this happen? It has to do with the strange history of vanilla (yes! boring old vanilla) and the human perception of taste. | PBS Origins | Facebook