California Governor Gray Davis yesterday (Monday) signed into law legislation that makes his state the first to attempt to combat global warming by requiring reduced tailpipe emissions of greenhouse gases, the Los Angeles Times said. The newspaper said the Democratic governor's widely expected decision to sign the bill by Assemblywoman Fran Pavley (a Democrat representing the city of Agoura Hills) was a triumph for environmentalists, who suffered a bitter defeat in Washington earlier this year when they attempted to raise fuel economy standards.