Explains how the United States Supreme Court works, including its history, how the court system works, and important judges who sat on the Supreme Court.
"Did you know that the largest bone in the human body is the femur? In adults, the skeleton makes up 15 percent of the body's weight. Discover more fascinating facts in How the Human Body Works - The
"Did you know that the average surface area of an adult's lungs is about 750 square feet (70 square meters)? The average adult takes 12 to 20 breaths per minute at rest. Discover more fascinating fact
"Did you know that about 20 percent of the body's energy is used by the brain? The average adult brain weighs 3 pounds (1.5 kilograms). Discover more fascinating facts in How the Human Body Works - Th
"Did you know that there are more than 600 named muscles in the human body? The muscular system makes up about 50 percent of the body's weight. Discover more fascinating facts in How the Human Body Wo
"Did you know that there are approximately 500 species of bacteria in the intestines? The surface area of the small intestine is 2,700 square feet (250 square meters). Discover more fascinating facts
Explains the office of the presidency in the United States, including its history, how presidential elections are run, and the kinds of things the president is responsible for.
"Did you know that there are around 60,000 miles (95,500 kilometers) of blood vessels in the human body? More than half of the body's blood is made of a substance called plasma. Discover more fascinat
An all-encompassing guide to entertaining, amazing, and possibly even educating children, Be the Coolest Dad on the Block provides the perfect excuse to stand on a balloon, play with grated cheese in
