[SunkenCiv]

I don't see how life could form on planets in binary star systems. Wouldn't the paths of the planets be so strange as to result in significant changes in temperature throughout the year?

The problem is worse than that. It's not likely that the planet formed in this binary system by the same model used for planetary formation here, and if there are a number of planets in this binary system, the problem gets even worse.

[who_would_fardels_bear]

There's probably an increased chance that whatever planets there are would either collide or at least interact gravitationally more often than ours do.

Also there is the chance of planets being slung shot out of their bi-solar systems completely or gobbled up by one of the suns.

It took life a long time to develop on earth. From the geological record it appears there were times of great change interspersed with long periods of relative stability.

Planets in a bi-solar system would most likely never experience any long periods of relative stability.