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ESSD - Northern hemispheric atmospheric ethane trends in the upper troposphere and lower stratosphere (2006–2016) with reference to methane and propane
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Tourism to Yellowstone National Park contributes $600 million to local economy - Yellowstone National Park (U.S. National Park Service)
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Reversal of global atmospheric ethane and propane trends largely due to US oil and natural gas production | Nature Geoscience
![ESSD - Northern hemispheric atmospheric ethane trends in the upper troposphere and lower stratosphere (2006–2016) with reference to methane and propane ESSD - Northern hemispheric atmospheric ethane trends in the upper troposphere and lower stratosphere (2006–2016) with reference to methane and propane](https://essd.copernicus.org/articles/14/4351/2022/essd-14-4351-2022-f05.png)