The term "dark energy" comes off very voodoo-like, but is there a rational way of thinking about such things? The rational part of our brain may think it ridiculous to attach good and evil energy to things, yet how many of us would feel uncomfortable living in a house in which people were murdered? As crazy as it may seem, there's something to "dark energy", but what exactly is it? Learn more about your ad choices. Visit megaphone.fm/adchoices