Here's Andy Merrill in character as Brak, the cat-masked intergalactic pirate from Space Ghost, Space Ghost: Coast to Coast and The Brak Show, offering a timely lesson in respecting personal boundaries.
This [possibly edited] photo of Trump is trending. But why? Is it his luxuriant swept back hair? His coy over-the-shoulder invitation to join him in a frolicsome adventure? The lush greenery of the White House south lawn? Please submit your best guess in the comments.
In 2003 mathematician Gregory Galperin of Eastern Illinois University offered a remarkable way to calculate π: Launch two masses toward an elastic wall, count the resulting collisions, and you can generate π to any precision, at least in principle.
“On the one hand, our method is purely mathematical and, most likely, will never be used as a practical way for finding approximations of π. On the other hand, this method is the simplest one among all the known methods (beginning from the ancient Greeks!).”
The video above, by 3Blue1Brown, gives the setup; the continuation is below. Via MetaFilter.