Child labor photos from the Library of Congress.
Exiled Italian prince, only male heir to throne, now sells pasta from a van in California.
Universal law of urination in mammals - everything pees for (approximately) 21 seconds.
Why Old Men Have Big Ears.
Illustrated Travel Books of the Edwardian Era.
ICYMI, Wednesday's links are here, and include the anniversary of the 20th of July plot (the unsuccessful bomb attempt to kill Hitler in 1944), calculating the Ghostbusters' 35 foot long Twinkie in real life, Apollo 11 anniversary, and male contraceptive news (just wear a polyester sling, and let the heat and electrostatics do all the work).