
Inventors are problem solvers. They find solutions. They make new things. Years ago, people used candles for light. This was not always safe. An inventor created a light bulb. The light bulb made life better.
Photo Credit: Sunny studio/Shutterstock
What does it mean to vote? Who can vote? Imagine … read more
This man works for the Centers for Disease Control (CDC). … read more
A laser is a thin beam of light. People use lasers … read more
© 2025 McGraw-Hill Education. All Rights Reserved.