Mario Molina was born in Mexico. As a little boy he played with toy chemistry sets. Mario Molina became a chemist.
Photo Credit: Louis MONIER/Gamma-Rapho/Getty Images
In the Know
Women’s World Cup
There is a big soccer tournament June 7 – July … read more
In the Know
What Is a Laser?
A laser is a thin beam of light. People use lasers … read more
In the Know
Do You Play with Your Food?
We are not supposed to play with our food. But … read more