One hypothesis says that sleep helps "clean" the brain of damaged molecules and toxic proteins.
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Reading between the lines of Dorothy’s adventure to the Emerald City.
Belief is not just about God or ghosts.
The "overview effect," experienced by astronauts when they view the Earth from outer space, irrevocably changes your perspective as a human.
Spirituality can be an uncomfortable word for atheists. But does it deserve the antagonism that it gets?
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For decades people have arranged to freeze their bodies after death, dreaming of resurrection by advanced future medicine. Many met a fate far grislier than death.
A mile-high tower would not just be a new structure, but a new technology.
Trump is #45 but Pence is #48 – and other strange consequences of the curious office of vice president.
From the cosmic blast into another being's mind, to rolling bliss or obedient mind-slavery, fictional drugs have it all.
The term socialism makes political discourse difficult. Should we do away with it altogether?
Scientists are highly skeptical, but such “cosmic wanderlust" isn't a bad thing.
These photos of scientific heroes and accomplishments inspire awe and curiosity.
Being an American president is a powerful but dangerous job, a fact shown by many assassination attempts.
Sibling rivalries can lead to some impressive moments in history, how did these seven sets of siblings do?
The United States is by far the world's largest dealer of arms, which often fall into the wrong hands.
America isn't immune to attempts to remove books from libraries and schools, here are ten frequent targets and why you ought to go check them out.
Why do great minds argue for positions we find repulsive? Today, we find out why Robert Nozick was a libertarian.
When we call something ugly, we say something about ourselves – and what we fear or dread.
Physicists propose that violations of a fundamental law of physics in early stages of the universe are responsible for the mysterious dark energy.
Trying to figure out the meaning of life? Here are a few thoughts on the subject from some very famous American philosophers.
The off-kilter war of words between Donald Trump and Kim Jong-un reminds us of better, funnier insults.
"At times, it seems as if we are condemned to try to understand our own time with conceptual frameworks more than half a century old." Historian Niall Ferguson says it's time for an update.
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Sotheby’s will auction off 380 pieces from Bowie’s collection later this year. The collection is “eclectic, unscripted, [and] understated,” according to Sotheby’s European chairman Oliver Barker.
Scalia was sitting right next to Clarence Thomas, the sole African-American justice, when he made these startling comments.
Earth day may have been last week, but the lessons we learned about Earth from space are with us always. “We are not learning to view ourselves as an advanced, evolving […]
The scattered toponyms that delight us by their unvarnished expression of downheartedness, defeat and despond.
The most important lessons about Earth come from looking outward. “We came all this way to explore the Moon, and the most important thing is that we discovered the Earth.” […]
Will you explode, freeze, or boil? Advice on how to maximize your life. “A vacuum is a hell of a lot better than some of the stuff that nature replaces […]