title: Tough targets.
mesh_terms: D002245:Carbon Dioxide / Q000032:analysis*; D003226:Congresses as Topic; D058735:Environmental Policy / Q000331:legislation & jurisprudence*; D005579:Fossil Fuels / Q000191:economics / Q000706:statistics & numerical data*; D005858:Germany; D057232:Global Warming / Q000191:economics / Q000517:prevention & control*; D007391:International Cooperation / Q000331:legislation & jurisprudence*; D059205:Renewable Energy / Q000331:legislation & jurisprudence / Q000706:statistics & numerical data
chemical_list: D005579:Fossil Fuels; D002245:Carbon Dioxide