Have you ever looked up at a tree and wondered just exactly how tall it really is? We can help with that! Brian Campbell, NASA Senior Earth Science Outreach Specialist at NASA Goddard Space Flight Center's Wallops Flight Facility in VA, tells us about the challenge he has for all you citizen scientists out there! It's the NASA GLOBE Trees Challenge 2022: Trees in a Changing Climate and he needs YOUR help! Tune in and learn how you can help measure trees for NASA.