Dow Chemical Co. will put a greater emphasis on water treatment, auto-emissions cleanup and other efforts to become more environmentally friendly by 2015 in an attempt to improve its tarnished image with environmentalists... Dow's environmental moves are part of a pattern of large corporations embracing environmental and charitable issues in ways beyond marketing. Coca-Cola Co., for instance, has used its bottling trucks to distribute condoms in AIDS-stricken areas, while BP PLC of Britain has funded clean-energy projects in India, China and Brazil, according to U.N. officials... Andrew Liveris, Dow's chairman, president and chief executive, said his company is committed to change, as illustrated by its plans to expand into business areas that can help the environment.