Project aims to track big city carbon footprints

LOS ANGELES (AP) — Every time Los Angeles exhales, odd-looking gadgets anchored in the mountains above the city trace the invisible puffs of carbon dioxide, methane and other greenhouse gases that waft skyward.



via Gadgets News Headlines - Yahoo! News http://news.yahoo.com/project-aims-track-big-city-carbon-footprints-135809903.html