It's a regrettable reality that there is never enough time to cover all the interesting scientific stories we come across each month. In the past, we've featured year-end roundups of cool science stories we (almost) missed. This year, we're experimenting with a monthly collection. July's list includes the discovery of the tomb of the first Maya king of Caracol in Belize, the fluid dynamics of tacking a sailboat, how to determine how fast blood was traveling when it stained cotton fabric, and how the structure of elephant ears could lead to more efficient indoor temperature control in future building designs, among other fun stories.

Tomb of first king of Caracol found

Credit: Caracol Archeological Project/University of Houston

Archaeologists Arlen and Diane Chase are the foremost experts on the ancient Maya city of Caracol in Belize and are helping to pioneer the use of airborne LiDAR to locate hidden structures in dense jungle, including a web of interconnected roadways and a cremation site in the center of the city's Northeast Acropolis plaza. They have been painstakingly excavating the site since the mid-1980s. Their latest discovery is the tomb of Te K'ab Chaak, Caracol's first ruler, who took the throne in 331 CE and founded a dynasty that lasted more than 460 years.

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In 2019, we told you about a new interactive digital "murder map" of London compiled by University of Cambridge criminologist Manuel Eisner. Drawing on data catalogued in the city coroners' rolls, the map showed the approximate location of 142 homicide cases in late medieval London. The Medieval Murder Maps project has since expanded to include maps of York and Oxford homicides, as well as podcast episodes focusing on individual cases.

It's easy to lose oneself down the rabbit hole of medieval murder for hours, filtering the killings by year, choice of weapon, and location. Think of it as a kind of 14th-century version of Clue: It was the noblewoman's hired assassins armed with daggers in the streets of Cheapside near St. Paul's Cathedral. And that's just the juiciest of the various cases described in a new paper published in the journal Criminal Law Forum.

The noblewoman was Ela Fitzpayne, wife of a knight named Sir Robert Fitzpayne, lord of Stogursey. The victim was a priest and her erstwhile lover, John Forde, who was stabbed to death in the streets of Cheapside on May 3, 1337. “We are looking at a murder commissioned by a leading figure of the English aristocracy," said University of Cambridge criminologist Manuel Eisner, who heads the Medieval Murder Maps project. "It is planned and cold-blooded, with a family member and close associates carrying it out, all of which suggests a revenge motive."

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