Make the Pledge

350 parts per million may sound like an arbitrary answer to a science experiment, but to many scientists 350ppm may be the most important answer to the world’s most important scientific problem—global warming. 350ppm is what climate experts have figured to be the safest limit of CO2 in Earth’s atmosphere. Currently levels of CO2 are figured to be around 388ppm and continuing to rise. This February join Ann Arbor’s chapter of 350.org and take the Winter Climate Pledge to help lower carbon emissions. Active steps to lower carbon levels may be as big as insulating the walls in your home or as menial as walking to the grocery store. By filling out a simple pledge form on the website and sending it in, you will be motivated to put your pledge into action. To find out more about what you can do to join the 350 movement visit www.aa350.org