In the Know

What Is a Heart? Place your hand on the left side of your chest. Do you feel anything? Try again after exercising. Do you feel it now? That’s your heart! Your heart is a muscle. … Read more

Bundle up! It’s time to explore the ice caves of the Apostle Islands. These caves are located along the shore of Lake Superior in Wisconsin. What can you see in the ice caves? Lots of … Read more

Kelp is a type of seaweed. It looks like tall grass, but it is not a plant. Kelp does not have roots. It uses a structure called a holdfast to grip the ocean floor. Kelp … Read more

The Sundial Bridge is located at the Turtle Bay Exploration Park in Redding, California. It is a real eye catcher. It is also one of the world’s largest working sundials!   Light hits the bridge and casts a … Read more

What is winter like where you live? Are you getting ready for colder weather? Have you pulled your sled out? What about your gloves and winter boots? Animals prepare for winter, too.  Eastern gray squirrels find most … Read more

Off the coast of Australia, an area bursts with color and life. Observers have called it a city in the sea. Stretching 1,600 miles long, this living structure can be seen from the moon. It … Read more

In 1957, scientists in the former Soviet Union launched a satellite into space. The satellite was called Sputnik. Sputnik helped scientists learn about space and space travel. The Soviet Union used this information to make … Read more