It may seem incredible that people once willingly ingested radium.
We humans are dependent on chemicals like water, air, sugars, starches, fats, proteins, as well as on small amounts of vitamins and minerals.
Adult painted turtles head underwater, where they'll spend the winter on the bottom of a lake, pond, or river but they use some tricks to survive the cold...
Water does a much better job than air of conducting sound waves, but that extra conductivity makes it harder, not easier, to tell where a sound comes from.
Take your guess: lions, tigers, or bears. Nope, you're wrong!
Fish have been eating plastic in the Great Pacific Garbage Patch. This has scientists concerned about long term effects on the environment.
Try this experiment at home and learn why quinine has a blue glow!
We've all seen how when we splash water on cloth, the places where the water hits appear darker than the rest. Does the cloth change color when wet?
Soap has been used for cleaning for many years, but it wasn't until modern chemists began to understand its structure that anyone knew how soap worked.
There's physics and science behind a ship's wake.