forest fires

This story of a man and his best friend, an 800-pound grizzly bear, is sweet and all. And it's pretty cute that the bear served as best man in his wedding. But doesn't this kind of thing always come back around to literally bite you in the butt? Incidentally, one of the google ads running along the bottom of the video was, "Bear Butchered Man in Ukrainian Zoo."

Also in today's links: controlling toxins from forest fires, an island secret uncovered, and more.

Here's a vivid example of an electrical short circuit in a beautiful natural setting. In brief, a short circuit occurs when the normal path of current is bypassed via an alternate route with very low resistance. Since current likes to take the path of least resistance, most of it will flow through the short circuit. Also, according to Ohm's Law (V = IR), reducing the resistance of the circuit will drive up the current. Large currents result in excessive resistive heating in circuits, and we usually want to avoid them.