The skulls of two juvenile duck-billed dinosaurs (Hypacrosaurus stebingeri), shelved after their discovery in the 1980s, have something that looks a lot like DNA. There are many tiny circular structures at the back - some linked together, others standing apart, frozen as they were when the animals fossilized. Several of these circles contained a dark material reminiscent of a nucleus, and others held tangled coils resembling chromosomes. "I'm not even willing to call it DNA because I'm cautious, and I don't want to overstate the results," said the team's molecular paleontologist Mary Schweitzer. "There is something in these cells that is chemically consistent with and responds like DNA."
The Canada's southern Yukon is an unlikely square mile of sand dunes called the Carcross Desert. It was once the bottom of a large glacial lake, which made the sand. When the glaciers retreated, the lake lost much of its water, and the sandy lake bottom was left behind. Strong winds from nearby Lake Bennett have constantly buffeted the sands making it difficult for plants to become established. So the mini-desert remains un-reclaimed by the northern wilderness. (And if you want to be technical, the "Carcross Desert" is not a desert, because the local climate is too humid to qualify.)
On January 26th, 1700, a major earthquake occurred off today's western coast of Canada and the US, with an estimated moment magnitude of 8.7–9.2. It entered Native American oral history, of course, as a major event. But they did not use written records, nor the (European) Gregorian Calendar. How do modern historians then know the precise date of the earthquake? Well, it comes from a combination of records. The earthquake caused a tsunami which struck the coast of Japan, who recorded the day it hit and the magnitude of the waves. The earthquake also impacted tree rings in the Pacific Northwest, which modern scientists can use to estimate year and time of year. Between the Native American oral histories, the Japanese records, and the tree rings, historians are pretty sure they have the date right!
First opened in 1805, the Maine Avenue Fish Market in Washington, DC, is the oldest fish market in the United States.
A Zapotec figural ceramic of the Butterfly God found at Monte Alban in Oaxaca, Mexico. 200 - 600 CE.
Scientists and conservators are finally able to return to what was once an Andean war zone. Tierradentro is a cluster of 162 burial chambers hewn from the peaks of four parallel mountains near the Andean town of Inza. They span a few miles of mountainous terrain, with the tomb entrances at the peaks.
These burials were created between 600 and 900 CE, before Spanish colonization, as “homes for the dead” of the ancient society’s elite class. Some are the size of a closet. Others are large, with multiple rooms. And every single burial chamber has beautiful, unique paintings. Read all about archaeologist's recent return to Tierradentro in an Atlas Obscura article
Train travelers wearing masks to avoid catching (or spreading) the deadly Spanish Influenza (1918-1920)
Sonny Bono is the only person in American history to have been a US Senator -- and have a had a number-one pop single on the US Billboard Hot 100.
This is a map of Mexico City, showing flight paths planned overhead for a cartographic flyover. Made by Aerofoto in 1936.
"Woe to all of us if ever as a people we grow to condone evil because it is successful."
Theodore Roosevelt, American president