[The chickadee] is a favorite of many bird watchers. It can remember thousands of places where it hides its food, and its heart beats about 500 times a minute! These…

Some bugs are big–but they can’t beat the ancient dragonfly called Meganeura. Its wingspan was as wide as a seagull’s. Try squishing that with a fly swatter! Readers will love…

About 140 million years ago, South America and Africa broke apart, eventually drifting to their current positions on Earth. But when looking at a map of the two, they still…

Readers will explore the unique history of US Army Rangers. From the beginning of US history in the 1600s, Army Rangers have been ready to take on difficult missions behind…

The sun’s importance to Earth and the solar system can’t be exaggerated; it’s the linchpin for life itself. The sun’s structure, atmosphere, and other features are introduced in collaboration with…

Mars is perhaps the most thrilling planet these days. With rovers exploring its surface and manned missions in the works, people are wondering if Mars is our next home! In…

U.S. Air Force Pararescuemen are part of one of the most important teams in the U.S. Military. These skilled operators perform daring rescues all over the world, and all while…