Sid's dad has a cold. He is sneezing. His nose is runny. But how come Sid has to keep washing his hands, if his dad is the one who's sick?

Sid’s dad has bought some potting soil so he and Sid can plant a tree for Earth Day. But what exactly is in dirt? Sid and his Dirt Detective friends are going

When Sid's favorite shoes don't fit his feet anymore, he can hardly believe it! He is determined to get to the bottom of this strange problem. With a little hel

On a basketball. On a door handle. Even in the air you breathe! Germs are everywhere. What can you do about it? Learn ways to avoid germs, to guard against gett

Presents general information about different types of germs, as well as the diseases they cause, and how people work to prevent them from spreading.