Using fun facts and creative comparisons, science author Robert E. Wells answers some of humankind's biggest questions about the world we live in. This collecti

It's hard to imagine—the molecules in the glass of water you just finished might have once been part of a water hole that dinosaurs drank from! In this fascin

Move to another planet? Sounds interesting! In our imaginary spaceship, let's check out the planets in our solar system. Mercury is closest, but it has no air,

Includes access code (p. 2) for an online readalong of the story.

The blue whale is the biggest creature on Earth. But a hollow Mount Everest could hold billions of whales! And though Mount Everest is enormous, it is pretty sm