Fossil footprints led two boys to an important discovery.

The scatterbrained baker, Mr. Sippey, bakes his famous cake only to have it go missing. Unable to find it, he goes home and discovers that the cake was for his own surprise...

"Human beavers" are scientists and field workers who build "starter dams" to improve damaged stream habitats and encourage beavers to settle there.

New machines can tell us how the brain works.

Glass is used to make beautiful paperweights

The author follows a llama salt caravan across the Andes Mountains. He describes his companions two Quechua Indians and their way of life.

Read how one artist's memories are carved into stories.

See how these birds use their feet

Learn about "change blindness"--how we can look at something but not really see it!

How does the male weaverbird make such a perfect nest? By building it over and over again until he gets it right.