CalPERS pushes for cleaner-burning fuels

The California Public Employees Retirement System appears poised to push for lower vehicle emissions by directing its investments towards companies which produce cleaner cars.

On Monday, trustees voted to ask automakers to show how they are working to increase fuel efficiency in cars and ask energy companies for better information on power plants' environmental effects. Trustees have already voted to invest $200 million in renewable energy companies and $50 million in companies they deem to be environmentally friendly.