San Francisco Chronicle: The flood of money flowing into green tech keeps rising. North American companies that create eco-friendly products raked in $3.95 billion in venture capital during 2007, up 38 percent from the year before, according to data an industry group will release today. California, as usual, scored the largest haul. Venture capitalists poured $1.79 billion into the Golden State’s green companies last year, most of them in the Bay Area. That’s 45 percent of all green investments in …