Call to action.

• Position: On the Line - United Nations Climate Change Conference - Brief article

October 24 marked an International Day for Climate Action organized by the 350.org global grassroots campaign. At more than 5,200 events around the world, people in 181 countries gathered to call for strong action and bold leadership on the climate crisis and at the U.N.

Climate Conference in Copenhagen. "350" refers to what scientists say is the safe upper limit for carbon dioxide, in parts per million, in the atmosphere. Right now, the planet has 390 parts per million C[O.sub.2]--and this number is rising by about two...