Watch: NASA Expert Dr. Kate Calvin Discusses How NASA Scientists Track Weather Changes Across The Globe

When you think of NASA, you may think of mighty rockets, rovers and astronauts, but what you may not realize is that NASA is the home to the largest group of Earth scientists in the world.

With more than 25 satellites in orbit, NASA tracks critical changes all over the globe, from air quality to extreme weather patterns.

NASA expert Dr. Kate Calvin joined the News On 6 team on Friday morning to discuss their work.