A psychic phenomenon has to be proven it exists first before science can explain why it exists. As far as I know ALL psychic phenomena has been explained as a hoax, naturally occurring phenomena or delusions/hysteria. Since psychics cannot reproduce the same or similar effect over again for the process of study it loses its scientific merit.
A bit late in the topic but personally I think that no one has proven jack all so anything is possible.
there is no proof for or against god, reincarnation, rebirth by Karma, etc.
I follow Catholic teaching for the most part because there is a lot of wisdom in how things are taught and it's the only organization I've seen where it is part of the written law by the Vatican to respect other religions.
what happens when we die?.....we rot....
Proof is in the eye of the beholder and anything can be rationalized away as delusion, magic, or any other excuse. It is not possible to prove precisely what happens at death and equally not possible to prove what doesn't happen (depending on your point of view.)
There are suggestions and indications either pro or con that are accepted or rejected by individuals based on either their sense of logic or their beliefs.