What Makes People from Different Parts of the World Have Different Skin Colors?
People noticed long ago that people from different parts of the world often had different skin colors. For example, people who liv
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Why Do We Call Galileo by His First Name Only?
The surname Galilei derives from the given name of an ancestor, Galileo Bonaiuti, a physician, university teacher and politician who lived i
Who Are Echo Boomers?
The largest generation of young people since the ’60s is beginning to come of age. They’re called “echo boomers” because they’re the genetic
Timely Courage
Late one evening during my summer vacation, while I was reading, the fuse blew. I was alone and in order to get some fresh air, I opened the
Call Nine One One
When I was seven years old, I dreamed of becoming a superhero or saving someone’s life. One day, I saw a man near the window sill. It looke