How are sloths not extinct yet from natural selection?
Survival of the fittest? Sloths have taken a different approach.
Why do lizards do push ups?
Lizards do push-ups to show off, display dominance, and regulate heat. So we have more in common with lizards than we think!
Why does the sky turn pink at sunset?
Don't miss the science behind nature's best Instagram filter.
Why does electricity make noise?
Discover the electrifying reason why AC/DC isn't just a legendary rock band.
Why can't robots check the "I'm not a robot" checkbox?
Robots absolutely can check a box on command. But that checkbox is tracking way more information than a simple checkbox click to determine whether you're a human or a robot.
Why is dental insurance separate from medical insurance?
Your teeth are a part of your body, right?
How can we see the Milky Way if we are in it?
Imagine the Milky Way galaxy like a stack of pancakes.
Why is “W” called double U and not double V?
Many other languages call it a “double V”. English hasn’t caught up with the trends.
Why are you more buoyant in salt water?
While you may feel weightless, I assure you, you are not.
What does “adopt a highway” mean and how does it work?
What do these adoptive road parents have to do to earn those signs?
Why is it easier to balance a bike in motion?
It’s easier to ride a bike than to understand why it’s easy to ride a bike.
Why are instruments in different keys?
Did you know that a C played by a trumpet is not the same C played by a piano?
Why do dogs have an extra paw pad on their front legs?
These corn-chip-smelling paw pads serve a helpful purpose.
Do elevator “Close Door” buttons really work?
It depends. If you're in the United States, probably not. If you're outside the U.S., probably so.
