Methane
in sentence
162 examples of Methane in a sentence
In many developing countries, 60-80% of solid waste is organic, with open dumping causing excessive amounts of
methane
to enter the atmosphere.
This is because the animal sector is responsible for a third of all anthropogenic
methane
and two-thirds of nitrous oxide emissions – both potent greenhouse gases that trap more heat than carbon dioxide.
In Siberia, vast quantities of methane, an extremely potent greenhouse gas, are locked up in what used to be called “permafrost” – regions in which it was assumed that the ground was permanently frozen.
But areas that used to be frozen are now thawing, releasing
methane
and thus contributing to further warming – and to further thawing, which releases more
methane.
One major problem with factory-style livestock production is that it leads to considerable greenhouse-gas emissions – and not just because the digestive processes of ruminant animals produce
methane.
There are also fears of
methane
leaks and induced seismicity.
Reducing livestock production in order to limit cattle-related
methane
emissions and deforestation – significant factors contributing to climate change – would also improve human health.
Formation of
methane
hydrate was noted, but was not decisive.
In the case of Deepwater Horizon, a huge dome could be put in place, despite the greater depth, thanks to deployment of modern unmanned underwater vehicles, robots, and positioning tools, but the formation of
methane
hydrates clogged the device and rendered it useless.
The Anthropocene Period could be said to have started in the latter part of the eighteenth century, when analyses of air trapped in polar ice showed the beginning of growing global concentrations of CO2 and
methane.
At the same time, of course, human consumption of fossil fuels, together with our agricultural activities, have caused substantial increases in concentrations of “greenhouse” gases – CO2 by 30% and
methane
by more than 100%.
For example, further warming would release large quantities of
methane
– a more potent greenhouse gas than carbon dioxide – from thawing Siberian permafrost, leading to more warming, more thawing, and more
methane
in the atmosphere.
Human-induced climate change stems from two principal sources of emissions of greenhouse gases (mainly carbon dioxide, methane, and nitrous oxide): fossil-fuel use for energy and agriculture (including deforestation to create new farmland and pastureland).
In September 1994, an explosion at Indonesia’s Serpong research reactor was triggered by the ignition of
methane
gas that had seeped from a storage room and exploded when a worker lit a cigarette.
For example, consider
methane
clathrate, an ice-like stone that in most cases is built in an ordered way by a complex collaboration of microbes.
Global deposits of
methane
clathrate contain more than twice the amount of energy of all known fossil fuels, and it can burn cleanly.
But a better understanding of biological “information flow” could help us use
methane
clathrate in ways that could actually counter global warming.
The cost of repairing the damage must be taken into account in the cost-benefit discussion of switching to clean sources of energy and reducing
methane
emissions from the meat industry.
These include black carbon or soot (the primary component of particulate matter that is also a major and growing health concern); hydrofluorocarbons (HFCs), used most commonly in refrigeration; and
methane
and tropospheric (or ground-level) ozone.
Indeed, the warming impact of soot is about 900 times greater than that of carbon, and the impact of
methane
is about 28 times greater; many of the HFCs have a warming impact that is about 2,000 times more powerful than that of CO2.
The United Nations Environment Programme’s Climate and Clean Air Coalition to Reduce Short-Lived Climate Pollutants estimates that fast action to reduce SLCPs, especially
methane
and black carbon, has the potential to slow down the warming expected by 2050 by as much as 0.5º Celsius.
Their research looked at how much we could help the planet by setting different levels of carbon taxes, planting more trees, cutting methane, reducing black soot emissions, adapting to global warming, or focusing on a technological solution to climate change.
So long as
methane
leakage is contained, CO2 emissions from natural-gas combustion can be significantly lower than those caused by reliance on oil.
Mangalyaan’s objective is to reach Mars’s orbit by September 2014 and to look for the presence of
methane
gas, a sign of possible life.
With lower costs for renewable electricity, the IEA report notes, hydrogen can be produced more cheaply as well, via electrolysis rather than from
methane
reforming, creating huge opportunities for the decarbonization of steel, fertilizer, and chemical production, and for the possible use of green hydrogen in long-distance trucking and shipping.
The organic waste is processed in a fermentation plant, producing compost and methane, which is used to produce electricity in a 25-megawatt power plant.
That is a conservative estimate, and if warming proceeds more rapidly because of the loss of the reflectivity of Arctic ice and the release of CO2 and
methane
from thawing permafrost, rising sea levels could lead to the submersion of low-lying islands and hence threaten the survival of entire nations.
Other short-lived super pollutants are also warming the planet, and none is in greater need of regulation than
methane.
According to the Intergovernmental Panel on Climate Change,
methane
is 86 times more potent than CO2 as a heat-trapping gas over a 20-year period, and is responsible for about a fifth of the warming caused by humans.
At the moment, however, that is not happening on a global scale, and only a handful of countries – led most recently by Canada – have committed to managing
methane.
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