
Dr. Kizzmekia Corbett’s team made a vaccine for COVID-19. Her team worked hard to make the vaccine. They made sure it is safe. The vaccine will help less people get sick.
Photo Credit: Evan Vucci/AP
This young scientist is looking at a leaf. He is … read more
To make a 3-D object, you start with a model. … read more
What question is this scientist asking? Maybe he wants to know how … read more
© 2026 McGraw-Hill Education. All Rights Reserved.