According to California state law, carbon emissions must be cut to 80 percent below 1990 levels by 2050. As of yet we have had no way to determine how much of California's pollution originates within the state, nor any way to determine how much of the local pollution is generated by combustion or by rotting vegitation. Now two scientists from Lawrence Berkeley National Laboratory are beginning a unique experiment to monitor greenhouse gasses above San Francisco from Sutro Tower.
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