855 records found. Displaying 217 - 240.
Heroes come in all sizes, colors, and ages, and 50 American Heroes Every Kid Should Meet (2nd Revised Edition) introduces readers to a diverse cast of great Americans. The remarkable stories… Read More →
It's a chilly winter evening. A northern gannet lets out a loud graaak. Swiftly and carefully, a scientist scoops the bird off the surface of the water into a net so that a team of experts… Read More →
Riots over the medical use of cadavers, public access to institutions for the insane, and full-blown surgeries without the aid of anesthetics or painkillers. Welcome to the middle ages of… Read More →
From the Series Sandra Markle's Science Discoveries
In 2007 only thirty Amur leopards remained in the wild. Scientists knew they needed to do more to help these big cats. However, details of the leopards' wild lives in their high-altitude… Read More →