Unexpected culprit—wetlands as source of methane

Wetlands are an important part of the Earth's natural water management system. The complex system of plants, soil, and aquatic life serves as a reservoir that captures and cleans water. However, as cities have expanded, many ...

Slashing plane emissions a lofty goal, but progress elusive

The aircraft industry is facing growing criticism over greenhouse gas emissions that are set to soar as more people take to the skies, but experts say game-changing technology for cleaner planes is still decades away.

Seaweed feed additive cuts livestock methane but poses questions

Supplementing cattle feed with seaweed could result in a significant reduction in methane belched by livestock, according to Penn State researchers, but they caution that the practice may not be a realistic strategy to battle ...

Progressive climate policy poised to pass in Oregon

Oregon is on the precipice of becoming the second state after California to adopt a cap-and-trade program, a market-based approach to lowering the greenhouse gas emissions behind global warming.

Big brands breaking pledge to not destroy forests: report

A rainforest area the size of Spain will be destroyed by firms growing consumer staples like palm oil in the decade to 2020, industry's self-imposed deadline to end deforestation, Greenpeace said Tuesday.

One change can make diet more planet friendly

Food production is an important contributor to climate change, accounting for about a quarter of carbon emissions globally. According to a study that examined the real-world diets of thousands of people in the U.S., we could ...

GE lost billions by 'misjudging' renewables: report

Investors in General Electric, once one of the world's most valuable companies, lost tens of billions of dollars after the Paris climate deal as it failed to adapt to the pace of the green energy transition, new analysis ...

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Greenhouse gas

Greenhouse gases are gases in an atmosphere that absorb and emit radiation within the thermal infrared range. This process is the fundamental cause of the greenhouse effect. Common greenhouse gases in the Earth's atmosphere include water vapor, carbon dioxide, methane, nitrous oxide, and ozone. In our solar system, the atmospheres of Venus, Mars and Titan also contain gases that cause greenhouse effects. Greenhouse gases greatly affect the temperature of the Earth; without them, Earth's surface would be on average about 33°C (59°F) colder than at present.

Human activities since the start of the industrial era around 1750 have increased the levels of greenhouse gases in the atmosphere. The 2007 assessment report compiled by the IPCC observed that "changes in atmospheric concentrations of greenhouse gases and aerosols, land cover and solar radiation alter the energy balance of the climate system", and concluded that "increases in anthropogenic greenhouse gas concentrations is very likely to have caused most of the increases in global average temperatures since the mid-20th century".

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