Greenhouse gas

https://www.wikidata.org/wiki/Q167336

Field Hierarchy

Parent
Biology 34.8M papers	Geology 9.1M papers	Ecology 7.8M papers	Oceanography 2.4M papers
Current
Greenhouse gas 171k papers
Child
Carbon footprint 18k papers	Climate change mitigation 12.4k papers	Emissions trading 9,389 papers	Kyoto Protocol 8,678 papers
Carbon tax 6,031 papers	Low-carbon economy 5,338 papers	Methane emissions 4,962 papers	Carbon neutrality 4,523 papers
Climate policy 3,955 papers		Atmospheric methane 3,527 papers

Trends

Notes

History