When not writing and hosting the "Math Dude s Quick and Dirty Tips to Make Math Easi"er podcast, Jason Marshall works as a staff research scientist at the California Institute of Technology (Caltech) studying the infrared light emitted by starburst galaxies and quasars. Before that, he was a postdoctoral scholar at NASA's Jet Propulsion Laboratory (JPL). Jason obtained a PhD from Cornell University, where he worked with the team of astronomers that built the IRS (nothing to do with taxes) instrument for the "Spitzer Space Telescope "and helped teach many physics and astronomy classes. In addit...