History Prehistoric rock art in Colombia's Serranía de la Lindosa reveals ancient human "Kiss" Popkin

History Workers routed a highway through this boulder rather than blast it Popkin

History Medieval castle toilets doubled as assassination shafts Popkin

History In 1884, a doctor ate too much cannabis and his arms shrank to five inches  Ellsworth Toohey

Science 1946 mood chart: know your bad weeks two months in advance Ellsworth Toohey

Science A 1946 plan to feed a billion people with sawdust Ellsworth Toohey

History Historian explains why modern bread sucks Séamus Bellamy

History What thousands of years of foot traffic does to marble stairs Popkin

Technology Arthur C. Clarke predicted remote work, telesurgery, and mobile phones in 1964 Ellsworth Toohey

art Painters have been lying with mirrors for 600 years Ellsworth Toohey

Science Albert Hofmann's first LSD trip, 83 years ago today Ellsworth Toohey

History Someone already pitched Bezos' 10,000-year clock — in 1903 Ellsworth Toohey

art A piece of the Eiffel Tower's original staircase is going to auction Ellsworth Toohey

History 19th-century page turners were carved to look like human hands Popkin

History Did Victorians really treat headaches by hammering metal helmets? Popkin

History Clothing tags from the 80s hid jokes, messages, and mischief Popkin

Science The doctor who proved handwashing saves lives was locked in an asylum for it Ellsworth Toohey

History JerryRigEverything tears down the LG Rollable phone that never was Séamus Bellamy

art Ancient Peruvian textile features a feline spirit Popkin

History How a naked steakhouse ad became a feminist protest poster Ellsworth Toohey