As the reality of global warming heats up, many companies are committing themselves to eco-friendly and socially responsible practices in order to curb greenhouse gas emissions.

For example, companies are cutting fossil fuel reliance by using wind power and creating more eco-friendly products such as roof tiles that deliver solar power to buildings.

Other companies are pursuing efforts to slash greenhouse gas emissions by decreasing automobile pollution. For example, the pharmaceutical company Roche is integrating Toyota Prius and Ford Escape hybrid vehicles into its pharmaceutical sales fleet.

Roche began its pilot hybrid-car program in 2004. Today 15 percent of the company's sales representatives drive company-owned hybrid vehicles, reducing greenhouse emission by 1,033 tons per year. (The company's sales representatives drive an average of 20,000 miles per year.) In addition, Roche will save more than 80,000 gallons of gas per year by switching to these hybrid