There are more than 40 theories as to what déjà vu is and what causes it, and they range from reincarnation to memory glitches. Do these theories shed any light on this perplexing phenomenon?
Decapitation is a surefire way to deliver a quick and painless death, right? In actuality, an increasingly large body of historical and scientific evidence suggests that beheading doesn't, in fact, deliver instant death. See more »