Light takes years to reach us from these stars far away in space. When solid objects move through space, they follow certain rules that let us predict how they will act. We call [...]
Gravity is an important cause of acceleration Newton's Second Law of Motion tells us that force equals mass times acceleration. You can try this out for yourself. Here's a website with [...]
Weighing the souls of the dead Philosophy means the love of wisdom. But what does that mean? It's hard to separate philosophy from religion. And it's also hard to draw a [...]
History of the family: Jesus, Mary, and Joseph, in a medieval ivory carving Were families the same as they are now? Families in the ancient world were very different from [...]
Rock Art from Utah, about 1700 AD In 1500 AD, there were many different religious faiths across North America. Each group of people worshipped their own gods. All of these faiths did [...]
A Catholic bishop marries Napoleon and Josephine - modern European religion Freedom of religion Even though by 1802 Napoleon had opened up the Catholic churches again, French people kept their freedom of [...]
René Descartes - Enlightenment philosopher How do we know what is true? All this fighting about religion and new ideas coming from Africa and the Americas, China and India meant that [...]
Voltaire - a French philosopher Voltaire took ideas about religion, science, and human rights that were just getting started in the 1700s AD, and encouraged new ways of thinking about [...]
Medieval science: an Italian pharmacy jar, about 1400 AD (Metropolitan Museum, New York) Learning from Islamic science During the Middle Ages, the best scientists and doctors weren't in Europe. They were [...]
The first view of the pilgrimage: Chartres on the horizon Who went on pilgrimages? In the Middle Ages, many people - both men and women - went on short or long [...]
