Water solvent is usually considered and essential basis for any Life in the Universe. Recently other solvents have been considered (eg Ammonia), but maybe we could come up with an idea of life that doesn't need solvent at all? As far as I understand solvent is need mainly as medium of TRANSPORTATION of substances and building blocks of life so they could come in contact with one another and react. So if we can imagine environment with exotic way to transport them (mechanical shaking, electromagnetic fields, etc.), solvent is not needed? I would like open minded response, or firm answer why it is impossible (eg maybe without solvent the building blocks could not react even if brought together mechanically? but why?) Thanks, Qshadow. P.S. I am talking about some very simple life form of course, maybe on the definition border of life and inanimate matter (like maybe nanobes, but probably not based on our carbon chemistry).