Articles about the origins of knowledge, science, and technology
How believable are the sword-hand theory and the Napoleon legend? From American freight wagons and Britain's 1835 Highway Act to Sweden's overnight switch in 1967 and the first painted center lines, this article looks at how the rules that divide the road came to be.
Signals that began as hand waves and flags beside railway tracks became the traffic lights and turn signals on our roads. This article looks at London's exploding gas signal of 1868, the rival claims to being first, why East Asia calls green lights blue, and why rear turn signals are amber in Europe but often red in the United States.
Italy called it the French disease, France called it the Naples disease, Russia called it the Polish disease. Tracing these names reveals exactly how syphilis spread from Naples to Japan in just two decades — along with the Columbus origins debate, a 2024 ancient DNA study, and the long history of treatments from mercury to penicillin.
In 1826-27, Nicéphore Niépce fixed the world's first surviving photograph on a pewter plate, an exposure long estimated at eight hours but now thought by some researchers to have taken days. The camera obscura had already been projecting images for centuries, so why did photography take so long to arrive? This article looks at why the real obstacle wasn't optics but chemistry.
Today, love is the fundamental basis for marriage. Yet until the 18th century, choosing to marry for love was considered irresponsible and dangerous. Marriage was a matter of economics, politics, and religion. Additionally, the notion that humanity 'evolved from promiscuity to monogamy' is merely a 19th-century theory, now rejected by modern anthropology. We trace the social transformation of marriage itself.