If you're thinking about a smartphone, talk with your parents.
The color of paper money has several purposes.
Teachers have a variety of reasons for having students read stories from decades or even centuries ago.
Moths often flock to lights at night. What causes this behavior?
The depth of the ocean varies greatly. Here's how scientists can measure it.
Every person's blood is identified by type. Why does this matter?
How do we know that bees were around when dinosaurs still roamed the Earth? The main evidence comes from fossils - the mineralized remains of long-dead organisms.
Why do some people choose to alert others when they see something bad happening, even if it isn't their job?
Binoculars can be used to look into space. There are reasons why we don't use them.
Sweaty feet and certain cheeses have something in common that makes them reek - can you guess what it is?