Dominoes dates back to the 12th century! It was played in China during the Yuan Dynasty and was referred to as 'pupai'!
Fact Lab
What we can see and grasp about the universe makes up a mere 5% of what it’s made of. Twenty-seven percent of the universe consists of so-called dark matter, and nobody knows what that actually is. Even more astonishing, dark energy accounts for 68% of the universe, and we’re equally clueless about the nature of this mysterious force.
Hundreds of years ago, Robert Hooke published a book called Micrographia that included hand-drawn images of samples observed under a microscope! Hooke, who we mentioned in a previous fact, is often credited as the discoverer of cells, after studying cork under the microscope.
The world average of twins is 13 twins per 1,000 births. But in Benin, a country in central Africa, that rate is more than doubled with nearly 30 twins per 1,000 births. Though there’s no single reason that causes this spike, genetics, diet, and the height of the mother all play a role.
Fact Lab
What we can see and grasp about the universe makes up a mere 5% of what it’s made of. Twenty-seven percent of the universe consists of so-called dark matter, and nobody knows what that actually is. Even more astonishing, dark energy accounts for 68% of the universe, and we’re equally clueless about the nature of this mysterious force.
Hundreds of years ago, Robert Hooke published a book called Micrographia that included hand-drawn images of samples observed under a microscope! Hooke, who we mentioned in a previous fact, is often credited as the discoverer of cells, after studying cork under the microscope.
The world average of twins is 13 twins per 1,000 births. But in Benin, a country in central Africa, that rate is more than doubled with nearly 30 twins per 1,000 births. Though there’s no single reason that causes this spike, genetics, diet, and the height of the mother all play a role.
The Grand Canyon is incredibly massive and has so many sudden changes in elevation that it creates its own weather. Temperatures and precipitation vary drastically from one part of the canyon to another. The coldest weather station is on the North Rim at the Bright Angel River Station, while the hottest and driest is just 8 miles away at Phantom Ranch!
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