Roundup of Mother’s Day links.

The Flying Winnebago: For some reason the heli-camper never really caught on.

How Leonardo da Vinci Drew an Accurate Satellite Map of an Italian City in 1502.

It’s Fred Astaire’s birthday — here are clips of some of his best dancing.

The Doorway Effect: Why Do We Forget What We’re Doing the Minute We Enter a Room?



What Is Going On With UFOs And The Department Of Defense?

ICYMI, Wednesday’s links are here, and include the anniversary of V.E. Day (when World War 2 ended in Europe), how the 1969 “Paul McCartney is Dead” hoax came about, a 1911 trans-Saharan ostrich heist, and the 1973 Turkish Captain America movie in which he teams up with a Mexican wrestler to fight evil Spiderman (who murders people with, among other things, shower nozzles and guinea pigs).