Subject
environmental policy
climatic change
25
climate protection
10
greenhouse effect
6
greenhouse gas
6
energy model
4
global warming
4
energy policy
3
environmental economy
3
carbon dioxide production
2
climatic impact
2
cost factor
2
economic aspect
2
emission
2
energy consumption
2
environmental impact
2
sustainable development
2
anthropogenic emissions
1
asia
1
carbon dioxide
1
carbon dioxide cycle
1
climate model
1
economy
1
emissions trading
1
energy
1
energy economy
1
energy production
1
environmental monitoring
1
environmental program
1
environmental protection
1
europe
1
global aspect
1
global change
1
government policy
1
immission protection
1
industry
1
methane
1
nitrous oxide
1
ozone layer
1
policy
1
political aspect
1
renewable energy
1
traffic
1
volatile organic compound
1