Brazilian atmosphere perfect for cloud making

I thought this was a great article. I feel it is necessary to point out that these terpenes produced by trees were once called out by Ronald Reagan and Secretary of the Interior James Watt as being pollutants. So when it was famously pointed out by the administration that trees cause more pollution than automobiles, essentially this was a correct statement, if your  definition of pollution is clouds. It was the cloud-forming particles produced by trees that Reagan declared as being pollutants. As always with political statements, it is necessary to check what the definition of “is” is.

Ryan Heiderman, graduate student in forestry