A greenhouse gas (sometimes abbreviated GHG) is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. This process is the fundamental cause of the greenhouse effect. The primary greenhouse gases in the Earth's atmosphere are water vapor, carbon dioxide, methane, nitrous oxide, and ozone. In the 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 average about 33Â°C colder than the present average of 14 Â°C (57 Â°F).
The inevitable 2012 title was ‘Human population reaches 7 billion‘, surpassing anything anyone could have imagined 100 years ago. Now, we’re approaching a very worrying milestone – CO2 levels in the air will reach 400 ppm (parts per million), for the first time in human existence. CO2 levels have risen at a quick, steady pace [...]
Greenhouse gas emissions are growing, growing and growing; the level of CO2 emitted by humans grew to 390.9 parts per million (ppm) – 40 percent above the levels in the pre-industrial age. Fossil fuels are the biggest are the biggest contributor to this volume, responsible for 375 billion metric tonnes (413.37 billion tons) of carbon [...]
A lot of the climate change models today are based under the assumption that greenhouse gas emissions weren’t that significant pre-1850, when the industrial age boom began. A new study from scientists at Utrecht University in the Netherlands found otherwise, and reported that human activity was responsible for plenty of greenhouse gas emissions in the atmosphere [...]
While there are still a lot of climate change skeptics out there that argue that the human influence exerted upon Earth’s climate is minimal, if not non-existent, a myriad of research studies tackling the subject would say otherwise. Fossil fuels usage yields the most greenhouse gas into the atmosphere, out of all other human-induced pollutant [...]
According to a new report released by the Chinese authorities, global warming “threatens China’s march to prosperity by cutting crops, shrinking rivers and unleashing more droughts and floods“. China, the world’s second largest economy and biggest polluter understands that “greenhouse gases from industry, transport and shifting land-use poses a long-term threat to China’s prosperity, health [...]
There has been a lot of fuss lately about shale gas, which has become increasingly important in the past decade, particularly due to hydraulic fracturing (or fracking), a modern technique used to extract it from the underground. Many have proposed natural shale gas as a supposedly clean bridge fuel, fit to address climate change and [...]