Dr. Miho Janvier talks about her work studying solar storms, and tells us about the ways these storms have impacted humans in the past. She explains why they are challenging to model and says why she's interested in "garbage" data from planetary missions.

Chase Childs tells us about satellite remote sensing. He explains how near-infrared images can expose underground structures, and why plant health is of surprising interest to archeologists. He also talks about GlobalXplorer, and some of the site's power users who have painstakingly mapped Peru.