This is a photo of the Charles Bridge, spanning the Vltava River in the city of Prague. One of the loveliest Medieval bridges still extant, it was finished in 1402. There is a really neat animation that in three minutes shows how the bridge was built (it actually took 45 years IRL). Unfortunately Instagram won’t […]
This is the Pont du Guard, an aqueduct bridge made in the first century by Romans who used it to supply a colony where the modern French city Nîmes now exists. Think about the most recent modern cement structures that you have seen which have cracks and crumbles, and it will drive home just how
There’s a famous children’s book called _Everybody Poops_, and this photo might look like some sort of rendition of that. Here you can see birds, horses, dogs, pigs, and rabbits all in the act of defecating. Our own human species is represented in the second row, right next to the donkey. This visual diagram is
You’re looking at a recreation of a funerary site from ancient Ecuador, where these three levels of human remains were unearthed in 1980 as builders were getting ready to construct an airport at the capital city of Quito: a total of nine vertical burial tunnel-chambers were found. These bodies date from 680 CE, to a
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In an article published in the premier science journal _Nature_ earlier this week, a team of scholars announced their analyses of the operations of the first-ever discovered mummification workshop, and what they found was fascinating! This picture shows the layout of the “mummy factory”, first unearthed at the Egyptian site of Saqqara, about 20 miles
Trofim Lysenko, the Stalinist-era biologist who tailored his scientific ideas to suit the Soviet communist party. Denying natural selection and arguing that character traits developed in a parent’s lifetime could be passed onto offspring (like Lamarck), Lysenko put the study of biology in the Soviet Union back by decades. Many actual scientists he competed against
This tooth from the mid-6th century contains DNA from the plague, that same pathogen responsible for the Black Death in 14th- Europe. This version of the bubonic plague is known as the “Justinianic Plague,” named after the Byzantine Emperor who reigned during its outbreak in the capital of Constantinople in 541 CE. Many historians have
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This picture of the solar eclipse of May 29, 1919, is not only beautiful but also scientifically important. It was taken by British scientist Arthur Eddington (1882-1944), and was the first physical test of Albert Einstein’s General Theory of Relativity. Of course, in retrospect, over 100 years later it might seem obvious that massive objects
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This is an early 14th copy of the _Trotula_, a medical text on women’s conditions. Trota of Salerno was one of the book’s authors. She was from the 1100s, and was called “magistra” or “female master” because her medical knowledge was so respected in her day.
The origins of human history keeps getting pushed further back in time, as a recent analysis of a wooden structure in Africa dating back almost a half a million years demonstrates. For reference, anthropologists now date the emergence of homo sapiens to about 200,000 years ago (although some argue for 300,000). The wooden structure discovered
Zambia Archaeological Site Has Earliest Known Wooden Structure Read More »
And what, pray tell, is going on here? This macabre device is a 1694 illustration of the weighing chair of Sanctorius Sanctorius (1561-1636), an Italian scientist who was the first (that we know of) to mesh quantitative experiments with the study of how the human body works. For thirty years, Santorio measured people’s sweat. Influenced
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This is a 16th century translation of “The Emerald Tablet”, among the most famous texts on alchemy ever. Although it purports to be from Egypt (that’s where a lot of medieval alchemists thought their sources originated), the first text we know of comes from an Arabic 6th/7th century source. Isaac Newton, himself an occultist, translated
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This is a photo from 1943 of a detention hospital for infected women in Leesville, Louisiana. And I’m about to deliver a really sad story about the U.S. government’s treatment of women during the 20th century. This is about a series of laws that came to be known as “The American Plan,” and they resulted
Chamberlain-Kahn Act of 1918 Read More »
Fibonacci was an early 13th-century Italian who made Europeans aware that the Arabic number system we use today is much better for doing math than the Roman Numeral system medieval people had been using. Plus he wrote out the Fibonacci numbers, which are shown here in his most important book, _Liber Abaci_ (Book of Calculations).
Fibonacci Writings Read More »
The Lechuguilla Cave in south-eastern New Mexico (you can see a photo of part of it in the first slide) is the second deepest in the US (at 1,604 feet), and it runs underground for 150 miles. Located in the Carlsbad Caverns National Park, the cave isn’t open to regular visitors because it includes an
I would have liked to have met this man, who was as eccentric as this visage here implies. This is none other than Paul Erdös, a Hungarian mathematician who published more papers than any other to date (over 1,500) and worked with so many other scholars (he co-authored with over 500) that math geeks know
This is a jade statuette from 18th-century China of a type of mushroom called the _Lingzhi_. It has been used in Chinese Traditional Medicine for over a millennium, and was associated in the religion of Daoism with immortality. The physician Li Shizhen who lived in the 1500s writes that “it positively affects the life energy,
Al-Biruni’s phases of the moon. Fitting image for the lunar eclipse tonight. Biruni was one of the geniuses of astronomical investigation, active in the 11th century during a Golden Age of Islamic science.
Al-Biruni’s Phases of the Moon Read More »
This baddie not only flourished in 14th and 15th century Eurasia. It also killed millions in the 6th cenuury, and struck again in 19th century China. Scientists are now thinking it might have caused a bottleneck in the population of Europeans in the Neolithic era too!
Creationists frequently bring up the Piltdown Man to support their idea that scientists deliberately lie about human evolution. True, the Piltdown Man was a famous fake (built by *one* “scientist”) – a supposedly missing link between humans and apes. However, it was actually the scientific community that proved the bones to be a forgery.
