Mario Molina studied chemicals. He learned about bad chemicals in the air. The chemicals were hurting the environment. Mario Molina wanted to help protect Earth.
Photo Credit: (c) Ingram Publishing/SuperStock
In the Know
Impressive Ideas
In 1886 Josephine Cochrane invented the dishwasher. She observed that … read more
In the Know
What Is Brown v. Board of Education National Historical Park?
Long ago, school was different. Many Black children and White … read more
In the Know
What Is Sweat?
Sweat has an important job. It keeps us from getting … read more