Time to act.
D001272:Atmosphere / Q000737:chemistry; D002244:Carbon / Q000032:analysis*; D002245:Carbon Dioxide / Q000032:analysis*; D035082:Federal Government; D017752:Greenhouse Effect; D006802:Human Activities; D007391:International Cooperation; D013997:Time Factors; D014480:United Nations
D002245:Carbon Dioxide; D002244:Carbon