The Lifestream he mentioned was a major plot point of FFVII.
Essentially, the Lifestream was the lifeblood and energy of the planet. Â Shinra Corporation (a shadowy group in FFVII) had learned of a way to convert the Lifestream into electricity and at that point most of the people on the planet used that energy to power their homes, tech, etc. Â Thus, the planet was being drained of it's essence and then the rest of the game happens. (This being a super quick summary from memory.)
As for Aether, I will admit I am not far enough through the story to quite understand it's role, though it seems to be a similar concept to the Lifestream.
Essentially, the Lifestream was the lifeblood and energy of the planet. Â Shinra Corporation (a shadowy group in FFVII) had learned of a way to convert the Lifestream into electricity and at that point most of the people on the planet used that energy to power their homes, tech, etc. Â Thus, the planet was being drained of it's essence and then the rest of the game happens. (This being a super quick summary from memory.)
As for Aether, I will admit I am not far enough through the story to quite understand it's role, though it seems to be a similar concept to the Lifestream.
![[Image: Rheahna-thin-sig-small.png~original]](http://i112.photobucket.com/albums/n164/bluehairedfairy/Rheahna-thin-sig-small.png~original)
