Each rainbow is personal – the rainbow you see isn’t exactly the same rainbow the next person sees. It’s all in the eye of the beholder.

Even fake guns can be dangerous if they are mistaken for real ones by the police or other armed adults.

Your experience of time is relative because it depends on motion – more specifically, your speed and acceleration.

Almost everybody uses the internet just about every day. But do you really know what the internet is?

Humans generate a lot of trash, but there are cheaper and safer ways to handle it than loading it on rockets.

The idea of a creature like the Loch Ness monster fascinates people. But does the scientific evidence say it’s a prehistoric beast or total fake?

Fossil evidence of how the earliest life on Earth came to be is hard to come by. But scientists have come up with a few theories based on the microbes, viruses and prions existing today.

An astronomer takes us on a tour of the universe to learn about the birth of stars and planets and how they get their spin.

Birds and dinosaurs lived together for millions of years, but only toothless birds survived the asteroid impact that upended life on Earth.

Starting at the surface, you would have to dig nearly 2,000 miles before reaching the Earth’s core. No one could survive that trip – and the 10,000-degree F heat once there would vaporize you anyway.