To understand changes in our world, we need to observe from different perspectives. In time for the 50th anniversary of Earth Day, this month’s show will focus on how NASA monitors global change — from orbit, as you’d expect, but also from closer to the ground, with aircraft, boats and buoys. This webcast show will be conducted via video conference, with speakers joining remotely from home.

Watch live via YouTube and submit your questions via the chat.

Host: Preston Dyches & Shannon Forrey Speaker(s): Paul Rosen, Project Scientist, NISAR mission, NASA-JPL Cathleen Jones, Deputy Principal Investigator, Delta-X mission, NASA-JPL Chats are moderated.

Inappropriate language or posts that harass other individuals will be removed.

• Be courteous • Use respectful language • Protect your private information • No spam, sexually explicit or discriminatory material • Stay on topic