380 ppm
Sculpture about increased CO2 in the atmosphere
380 quarters placed on brass rods and set in the sandbars in the creek at Athens Academy
24 foot bar graph attached to the bridge showing the parts of air
With the increase of this "green house" gas the temperatures of the globe are increasing, causing the ice to melt faster and making the rivers run wild.http://www.athensacademy.net/gallery/v/lstueck/380+ppm/