TY  - SER
AU  - Elflein, Nicole
TI  - Heading for Zero
KW  - MAXIMIZING EFFICIENCY
KW  - CLEAN ELECTRICITY
KW  - CARBON DIOXIDE EMISSIONS
N1  - Cities are recognized as the leading producers of CO2 emissions. Many cities around the world realize this and are taking steps to reduce their carbon footprint. The most ambitious of them are aiming for complete carbon neutrality
ER  -