Without a point of reference, it can be hard to tell just how fast an airplane is traveling.
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An aerospace engineer explains why it’s so hard to tell just how fast an airplane is really moving.
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Evolutionary biology and the fossil record reveal a great deal about the origins of chickens and eggs.
Your bladder can signal the brain when it’s full, even while you’re asleep.
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A pediatric urologist explains how the bladder and the brain communicate to wake you up when you need to ‘go’ – and how that communication might break down.
Some animals, including goats, regularly give birth to two babies at once.
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Animals often give birth to litters of more than one offspring at a time. But are those babies twins?
The blow fly’s antenna is a specialized organ that helps the fly detect food quicker than its competitors.
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Flies often beat out competitors for food because of their specialized sensing organs called antennae.
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Tower cranes come in many different sizes, and many weigh more than 100 tonnes.
Those puckered prints show up after a while in the water.
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Recent research suggests blood vessels are the key to why fingers and toes turn pruny and pale after being submerged for a while.
Tears prevent your eyes from drying out and protect them from irritation and infection.
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An ophthalmologist explains how important tears are to keeping your eyes feeling good and working well – whether you’re on dry land or swimming in a body of water.
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Crying triggers changes in how a newborn baby gets their oxygen. But not all new babies cry, and it’s not always a problem.
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Black holes are known for pulling in all kinds of stuff – including light. Here’s how that actually works.
For decades, what lay at the end of this road was a mysterious secret.
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You’re not allowed to visit the part of Nevada known as Area 51. That’s because it’s a top-secret government facility. But the secrecy has to do with spy planes, not space aliens.
Between 2012 and 2021, funding to U.S. tech startups jumped to $344 billion.
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Traditional businesses operate with an established solution to a known problem. Startups focus on a product or service no one else provides.
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To find out what is beyond space, a good place to start would be to figure out where space – our universe – ends.
An artist’s depiction of two astronauts on Mars.
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If an astronaut were to die on Mars, neither cremation nor burial would be good options.
In addition to explaining natural phenomena, math can help strengthen your brain.
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Math is more than memorizing times tables and doing homework problems. It is woven into more aspects of your life than you might think.
Astronaut Buzz Aldrin planted the U.S. flag on the Moon on July 20, 1969.
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Some people incorrectly say the Moon landings didn’t happen. But the evidence – and logic – isn’t on their side.
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Your brains can perceive some electromagnetic waves – but not without your body’s help.
Voters often believe they only have two choices in American elections, even when multiple candidates appear on a ballot.
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The United States has a two-party political system because of single-winner plurality voting.
From limited editions to spelling errors, only the rarest Beanie Babies are worth money.
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An expert in high-end collectibles explains why certain items can become valuable – and also how they can lose worth.
You don’t need to watch where you step when it comes to bacteria.
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You can squash small bugs by stepping on them, but can you crush even tinier microorganisms like viruses and bacteria? It turns out that you’d need to apply a lot of pressure.