[MisterTea]

> Knowing this, I'd be more than surprised if Trees - or plants in general - haven't had any methods to control their food source: the atmosphere. I believe they do.

Recently there was an article posted here that claimed trees do have some ability to control the weather. The claim is trees simultaneously release water vapor into the atmosphere influencing rains.

[meristohm]

Yep! Evaporation through leaf stomata creates the internal pressure drop that pulls water from the earth into the roots.