How does the body know when to wake up? How does the body know when to fall asleep?
Your body works hard to raise its temperature, but in the meantime, you get the chills. Why?
Why does the body go through such laborious misery when we're sick?
Drop a few ice cubes into a glass of water at room temperature, and in a few minutes the water will cool. How does this work?
There are two ingredients inside a lava lamp: a watery liquid, and a waxy compound that collects at the bottom when the lamp is turned off.
When you take a roast out of the oven, the inner temperature will continue to rise by five degrees. How is it possible for the temperature to rise?
More often than not, the wind dies down at night after a blustery day. Where does the wind go? Why are nights generally more calm than days?
Everyone wants to know what to in case of a fire. Will cold water work better?
Don't try to store a loaf of bread in the refrigerator if you want it to stay fresh--refrigeration is the quickest way to make bread go stale.
If you needed to know what the weather was like in Singapore tens of millions of years ago, you'd have to consult a different source.