Air polution exacerbates droughts and flooding

http://www.nsf.gov/news/news_summ.jsp?cntn_id=122231&WT.mc_id=USNSF_58&WT.mc_ev=click

We live in a high altitude desert.  It is important that we know about this so we can reduce our aerosol emissions and thus help make sure we receive more rain to keep our reservoirs full.  This is especially important if we want our city to grow and thus require more water than we are currently using.