While investors were tough on Yahoo's stock on April 18, the Internet giant announced it will go easy on the planet by going carbon neutral. The Sunnyvale, California-based online search engine will offset greenhouse gas emissions resulting from its energy use by investing in environmental projects world-wide, said Yahoo co-founder David Filo.
Filo estimated that Yahoo going "carbon neutral" would cut air pollution as much as would result from turning off the electricity to all San Francisco homes for a month or removing 25,000 cars from the streets for a year. "We know carbon neutrality isn't without controversy," Filo said in a statement. "We think our offset program counts, but since this is a new and emerging market, we expect to learn as we go."