Can Fish Drown? The Strange Truth About Breathing Underwater
A fish can be surrounded by water and still run out of oxygen. That sounds like a contradiction only because we tend to think...
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Do Snakes Have Legs? The Hidden Limbs That Evolution Left Behind
Ask whether snakes have legs and the obvious answer seems to be no. A cobra, viper or grass snake has no arms, no feet and no...
Why Do Cats Hate Water? The Real Reasons Many Cats Avoid Getting Wet
Put a glass of water near a cat and it may drink calmly. Turn on a faucet and the same cat might become fascinated, batting at droplets for minutes. Lower it into a batht...
How Cold Is Space? Why the Famous −270°C Answer Is Only Part of the Story
Space is famously cold. The number repeated in textbooks, documentaries and trivia lists is about 2.7 kelvin, or roughly −270.4 °C — less than three degrees above absolut...
What Color Is the Sun? Why It’s Really White, Not Yellow
Ask a child to draw the Sun and there is a good chance they will reach for a yellow crayon. Search for a Sun emoji and you will find the same convention. For centuries, a...
Is the Moon Hollow? The Apollo Experiment Behind the ‘Ringing Like a Bell’ Myth
On November 20, 1969, Apollo 12 astronauts Pete Conrad and Alan Bean left the lunar surface and rejoined Richard Gordon in orbit. Their lunar module's ascent stage was no...