Applied Mathematics

Vampires are impossible, according to a physics professor at the University of Central Florida. Costas Efthimiou's debunking logic: "On Jan 1, 1600, the human population was 536,870,911. If the first vampire came into existence that day and bit one person a month, there would have been two vampires by Feb. 1, 1600. A month later there would have been four, and so on. In just two-and-a-half years the original human population would all have become vampires with nobody left to feed on. If mortality rates were taken into consideration, the population would disappear much faster. Even an unrealistically high reproduction rate couldn't counteract this effect."

Why science fact is cooler than science fiction

"Because they so rarely interact with matter we can shoot them straight through the Earth, and most will travel through without doing anything. Of course, most of them travel right through our detectors as well, but once in a blue moon one of them will interact - about one or so per day." - Dr Lisa Falk Harris, a particle physicist at the University of Sussex, on the nature of neutrinos.