Harriet Tubman is the New Face of the $20 Bill

After announcing last summer that they had plans to replace the face of Alexander Hamilton on the $10 bill with a woman, the US Treasury has finally settled on which woman to depict: Harriet Tubman. The historical abolitionist, civil rights activist and humanitarian will actually not replace Hamilton, though, as the Treasury has decided instead to add her to the $20 bill, along with Andrew …

City Guide: Mexico City

Steeped in ancient Mesoamerican history, this Latin American metropolis is a modern playground for international globetrotters

Topping several must-visit destination lists, Mexico City is clearly having a moment. But it would be remiss to think it’s purely a new crop of stylish outposts that is making this an alluring travel destination or the latest low-cost hipster haven. From the pottery- and pyramid-making Mayans who settled in the area in 250 AD, to the Aztec warriors who founded the city in 1325 …

Paleontologists Discover a Fossilized Skull of the Siberian Unicorn

While they might not look exactly like we had imagined, unicorns actually did exist—and more recently than previously believed. Paleontologists in Kazakstan have uncovered a well-preserved skull of the Elasmotherium sibiricum (aka the “Siberian Unicorn”) that lived just 29,000 years ago—shattering the previous estimation of 350,000 years. The Siberian Unicorn looks more like a furry, slimmed-down version of a rhino than a horse, but it …