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TIL when a German hacker stole the source code for Half Life 2, Gabe Newell tricked him in to thinking Valve wanted to hire him as an “in-house security auditor”. He was given plane tickets to the USA and was to be arrested on arrival by the FBI

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Oo7Zg TIL In 1900s, Minnie M. Cox, the first African-American woman postmaster in the United States, was forced to resign due to threats of physical harm from local white citizens. President Theodore Roosevelt, feeling Cox had been wronged, closed the post office and continued to pay her salary.
Z8bEY TIL That on September 27th, 1920 the American Professional Football Association (APFA) was founded in Canton. This league would later change its name to the National Football League.
b6DlQ TIL that a popular brand of stage blood is actually mint-flavored.
JgXB TIL there are more barrels of Bourbon in Kentucky than there are people.
jN6KR You probably know that your visual perception of the world is a bit different than your pets’. Dogs see things with less color than humans, snakes can see infrared, and if you have a pet bull, it lives in a world where red and green are the same color. This brings up a good question. Why do you have a pet bull? You should get a cat instead, and when you do, it is important to know that your new friend can’t focus on objects farther than 20 feet away. The point is, animals have evolved to see in a variety of ways. But how can we see things through their eyes? Marine biologist and National Geographic Emerging Explorer David Gruber collaborated with a research team to develop lights and camera filters that allowed him to do just that, underwater. Through their work, the team discovered biofluorescence in an abundance of aquatic species. This “glowing” trait has to do with how an organism absorbs and emits light. Research has indicated that this radiance is possibly used for communication and camouflage. One caveat: You need a certain species of eyes (or David’s camera) to see it. Swell sharks (Cephaloscyllium ventriosum) have fluorescent proteins inside their skin, which are triggered by the ocean’s blue light, becoming visible to other swell sharks. David’s camera has special yellow filters that allow the simulation of a swell shark’s vision. It turns out there is a massive rave going on 500 meters below the ocean’s surface, and one of the glowing guests is a type of cat shark!