There are more trees on Earth than stars in the Milky Way galaxy. While the Milky Way contains hundreds of billions of stars, the number of trees is estimated to be in the trillions
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Sweat is like a fingerprint. Its composition is a combination of compounds that is uniquely yours. So while everyone sweats, no two people sweat the same.
Tumbleweeds originated in Russia and Siberia and they were brought to the United States in the 1870s, hidden among imported flax seeds. It only took 20 years for the plants to spread throughout the western United States and parts of Canada.
0.5% of the male population are descended from Genghis Khan. (Scientists did a study in 2003 showing that about 16 million dudes share a Y chromosome with the famous Emperor.)
The Mongols Created the First International Postal System
Genghis Khan established the Yam (postal system), which allowed for fast, reliable communication across the vast Mongol Empire. Riders could travel 200 miles per day using relay stations.
The modern fishnet stocking was patented in the U.S. in 1908, originally intended for theater performers—and has remained a symbol of rebellion and seduction ever since.
A cockroach can hold its breath for 40 minutes. These pests can even survive being submerged under water for half an hour. They hold their breath often to help regulate their loss of water.
