Patrick Yeon of Planet Labs spoke with us about making satellites. We discussed a method of using orientation to control drag to control speed. While Patrick wasn't sure what he could say about GPS receivers on satellites, another site describes them as part of the flock. Sign up to get access to the huge Open California data set. Planet has many applications and their blog shows off some interesting finds, such as identifying illegal gold mines encroaching on rainforests, quantifying ports with computer vision, counting trees and classifying agriculture crops, fire mapping, and cloud detection. They are still hiring, apply using the email embeddedfm at planet.com will earn us (err, not you) more free tshirts.