Could our universe have been created in a petri dish? Avi Loeb seems to think so. The Harvard astronomer posits that a higher class" of civilization may have conjured up our universe in a laboratory far, far away. "Since our universe has a flat geometry with a zero net energy, an advanced civilization could have developed a technology that created a baby universe out of nothing through quantum tunneling," Loeb writes in an op-ed published by Scientific American last year. This theory, he suggests, would unite two seemingly opposite notions: the idea that a higher power might be driving our fate, and the secular concept of quantum gravity (a field of physics that seeks to work gravity into the theory of quantum mechanics"something that, to the bane of physicists everywhere, we haven't been able to do yet on Earth). Primarily, this theory hinges on a far-off advanced civilization's ability to meld both quantum mechanics and gravity and subsequently identify and recreate all of the universe's ingredients. Loeb ... has devised a framework that breaks advanced civilizations down into classes based on their ability to "reproduce the astrophysical conditions that led to its existence." Earthlings would fall into class C because ... we would not be able to recreate our current conditions should the sun suddenly die. A class A civilization, like our proposed creators, would be able to, say, generate large amounts of dark energy and, as Loeb suggests, create "baby universes" ... that could potentially spawn life.