Sentences with phrase «of greenhouse gases emitted by human activity»
Our homes and offices account for more than one third of all greenhouse gases emitted by human activity — the bulk of it for heating in winter and air - conditioning in summer, according to the U.N. Intergovernmental Panel on Climate Change (IPCC).
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Even allowing for the relative strength of the effects, CO2 is still responsible for two - thirds of the additional warming caused by all the greenhouse gases emitted as a result of human activity.
Lately, he's focused closely on carbon dioxide, developing a variety of ways to visualize the roughly 80 million tons of the greenhouse gas emitted daily by human activities.
The value at the end of Barack Obama's presidency was set at roughly $ 40 for each ton of carbon dioxide, the main greenhouse gas emitted by human activities, or equivalent amounts of other gases such as methane.
The rise in greenhouse gases corresponds with the extra amount of CO2 known to have been emitted by human activities, such as burning fossil fuels and cutting down forests.
James Hansen, director of NASA's Goddard Institute for Space Studies in New York, today published a study showing that greenhouse gases emitted by human activities have brought the Earth's climate close to critical tipping points, with potentially dangerous consequences for the planet.
¶ ¶ 38 («when used -LSB-,]... fossil fuels release greenhouse gases), 39 («use of fossil fuels emits carbon dioxide»), 45 («emissions resulting from human activities are substantially increasing... greenhouse gases»), 48 («increase in atmospheric carbon dioxide caused by the combustion of fossil fuels»), 52 («fossil fuels -LSB-,]... when combusted, emit carbon dioxide»).