Geoengineering

Plenty of proof if you look up from time to time. But interestingly, more articles coming out about it:

http://www.zengardner.com/geoengineered-snow-storms-wreaking-havoc-around-the-globe/

Here, even the US mainstream media has an item on using Americans as guinea pigs:

http://www.project.nsearch.com/video/declassified-docs-reveal-genocide-caused-by-chemtrail-testing?xg_source=activity

Proof of a similar action, in UK back in the 1960s. Made when the BBC had cojones:

http://www.youtube.com/watch?v=62WUzOhXUG0

Here's a Royal Society Report on this phenomenon, posted before, from 2009:

http://royalsociety.org/uploadedFiles/Royal_Society_Content/policy/publications/2009/8693.pdf

Lots more background info here:

 http://www.geoengineeringwatch.org/