Green Works will donate $645,000 to Sierra Club to support the organization’s ongoing conservation efforts. The donation—based on 2009 calendar year sales—raises the Green Works brand’s two-year contribution total to more than $1.1 million, according to Clorox. The donation stems from a partnership the Green Works brand and Sierra Club formed in January 2008 when the natural cleaners first hit the marketplace. As part of the partnership, Green Works natural cleaners agreed to donate a porti...