Worried about LEAD in your walls? How about LEAD in your clouds?

[link to news.nationalgeographic.com]

Surprising Clouds Forming Due to Lead in Air

Brian Handwerk
for National Geographic News
April 19, 2009

Lead in the air is causing clouds in odd conditions—in conditions typically too warm and dry for cloud formation—according to scientists who've "bottled" clouds and even grown their own.

Driven mainly by industrial lead-dust emissions, lead-heavy clouds could change weather patterns and might actually help fight global warming, the study suggests.


[link to www.sciencedaily.com]
Clouds: Lighter Than Air But Laden With Lead

One more source:

By sampling clouds -- and making their own -- researchers have shown for the first time a direct relation between lead in the sky and the formation of ice crystals that foster clouds. The results suggest that lead generated by human activities causes clouds to form at warmer temperatures and with less water. This could alter the pattern of both rain and snow in a warmer world.



My concern:
Doesn't this lead rain down on us?