... "portals" -- an extraordinary opening in space or time that connects travelers to distant realms. "We call them X-points or electron diffusion regions," explains plasma physicist Jack Scudder of the University of Iowa. "They're places where the magnetic field of Earth connects to the magnetic field of the Sun, creating an uninterrupted path leading from our own planet to the sun's atmosphere 93 million miles away."
<p>A weekly show where knowledge junkies get their fix of trivia-tastic information. This week, Hank Green discusses 50 common science misconceptions about topics such as bats, dog years, and dinosaurs.</p>