Why would science, or anything else, have to disprove it? Science makes no claims about an afterlife, but there's no evidence to indicate there is one, notwithstanding people like Sylvia Browne and John Edward who claim to talk with the dead. They've all been busted so many times it's hard to credit that they're still in business. They stand as quite a testament to human credulity. People who claim there's an afterlife must produce the evidence to justify the claim, otherwise the default position, scientifically, philosophically, and logically, is that the claim is false. Read my sig line.
Good point. I was responding to the fact that many people (including scientists) claim there is no afterlife. All I'm saying is, prove it.
Incidentally, human credulity exists everywhere, including science.