Open your arms for the parallel worlds

We have already seen enough "parallel world" things in SF, it is very amazing to have other possibilities. This kind of wish comes from the deep of our heart. And just because of the uncertainality of this theory and the ease to accept it (without complicated knowledge), we love it. Now it is the 50th year of the birth of this theory, so let's celebrate.
How did I get this? I guess the editors of Nature are also interested in SF. And we can review this thing here, in a easy-reading way - however, we noticed once again, that how a person was unnoticed or ignored in his period - sadness.