Thought this was from the Onion when I first read the headline...

http://www.sciencedaily.com/releases/2010/10/101021152401.htm

Plants Play Larger Role Than Thought in Cleaning Up Air Pollution, Research Shows

Yes, well, that didn't seem revolutionary.

However, the short article is a terse and digestible explanation of a lot of plant biology.

The complexities of the world are continuously affected by the law of unintended consequences.

Here's my takeaway:

1. We pollute and thereby put trees under stress.

2. They are now taking up the pollutants since they do that as a reaction to stress.

3. The reason geo-engineering cannot work is because we don't know squadoosh about how things are supposed to work, therefore, how can we know what to do to keep the environment safe for the biosphere?
--
Frish