It's nearly 20,000 miles long.
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While executive function matures between 18 and 20 years of age, the brain keeps changing long afterward.
A basement renovation project led to the archaeological discovery of a lifetime: the Derinkuyu Underground City, which housed 20,000 people.
On the morning of April 20, 1961, all conditions were "go" for an attempt at free flight. A man was on standby with a fire extinguisher. Just in case.
With ~400 billion stars in the Milky Way and 6-20 trillion galaxies overall, that makes for a lot of stars. But not as many as you'd think.
In the West, discussions of 20th-century painting are dominated by Warhol and Picasso, but trendsetting artists are found everywhere.
The majority of children who stutter will spontaneously recover from it without intervention, but some 20% of people do not.
X marks the spot. The Dutch town of Ommeren has been swamped by detectorists armed with shovels looking for $20-million treasure.
More than 20% Americans live in a state with access to a medically assisted death.
Since 2012, the amount of time that teenagers spend socializing in person has plummeted. Is it a coincidence that depression is more common?
In the early 20th century, a young biochemist named Alexander Oparin set out to connect “the world of the living” to “the world of the dead.”
Hindsight is 20/20, particularly when you have had 20 years to think about what happened.
A new 20-year analysis of over 14,000 psychology studies finds that a study's media coverage is negatively linked to its replicability.
This representation of the Bamum kingdom is a rare example of early 20th-century indigenous African cartography.
They're not just watching you; they're also calculating.
In the 20th century, many options abounded as to our cosmic origins. Today, only the Big Bang survives, thanks to this critical evidence.
If you give yourself and others space to tinker and experiment, then you might create something incredible. Here's how to do it well.
Goalkeepers have an enhanced ability to integrate auditory and visual information compared to other players.
A new analysis suggests previous "total cost of ownership" studies overlooked key factors.
It could perform a speech recognition task with 78% accuracy.
One particular revolution was so important, that at least one historian thinks the 20th century officially began in 1914 and ended in 1991.
An optical telescope with a massive 20-foot (6-meter) mirror has an eye-popping price tag of $11 billion.
Sci-fi enthusiasts have long hoped that a substance called antimatter might experience gravity opposite that of ordinary matter. It doesn't.
There’s really only one mistake you can make: continue doing the same thing you already know is hurting you and expect a different result.
Steam cars hit the U.S. market in the 1890s but were largely extinct by the 1930s. Will technology bring them back?
In an attempt to prove Christianity inferior to communism, a Soviet scientist hoped to play God.
A radical redesign of commercial aircraft, called the flying-V plane, could increase fuel efficiency by 20%, greatly reducing emissions.
These landscapes — of geographical differences in head shapes — have vanished from acceptable science (and cartography).
It took a series of ingenious experiments in the 20th century to uncover some of our biggest cognitive biases.
The shift from steam to electricity was inevitable — but some foresaw it earlier than others.