Sources used for this story include: “Rai… Heaven: Where Rocks Go Wandering,” by Tim Cahill (National Geographic). The world still holds many wonders that science—so far— cannot explain. As you learn about the three mysteries described, see if you can hypothesize any scientific...

From Christian scripture, John 6:1-19, New Revised Standard Version (Nashville, Tennessee: Thomas Nelson, Inc., 1990). A large crowd kept following [Jesus], because they saw the signs that he was doing for the sick. Jesus went up the mountain and sat down there with his disciples....

As a child, Joseph Priestley noticed something that would influence the rest of his life: If you keep a bug in a jar for too long, it will die. At the time Joseph Priestley didn’t understand why that was true—nobody did. No one really studied the air; it was something everyone took for granted.

In 1927 a Roman Catholic priest and scientist Georges Lemaitre proposed what later became known as the Big Bang theory of the origin of the Universe, based on work by Edwin Hubble who theorized and then proved that the Universe was getting bigger and bigger. Many scientists have discovered other...

A retelling of a Hawaiian legend. The god Maui was the smallest but smartest of his brothers, who often made fun of him because he couldn’t fish very well. Sometimes Maui would go out on a boat with his brothers, distract them when they had a fish on the line, and steal it from them, claiming it...