Greenhouse Gas Emission
Greenhouse gas emission
What is greenhouse gas?
A greenhouse gas is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. Many greenhouse gases occur naturally, such as water vapor, carbon dioxide, methane, nitrous oxide, and ozone. Others such ashydrofluorocarbons (HFCs),perfluorocarbons (PFCs), andsulfur hexafluoride (SF6) result only from human industrial processes. Greenhouse gases act like a blanket around Earth, trapping energy in the atmosphere and causing it to warm. This phenomenon is called the greenhouse effect and is natural and necessary to support life on Earth. However, the buildup of greenhouse gases can change Earth's climate and result in dangerous effects to human health and welfare and to ecosystems.
Human Activities and Greenhouse Gases
Human activities also add significantly to the level of naturally occurring greenhouse gases:
Carbon dioxide is released into the atmosphere by the burning of solid waste, wood and wood products, and fossil fuels (oil, natural gas, and coal).
USA THE SECOND
In 2012, US greenhouse gas emissions totaled 6,526 million metric tons of carbon dioxide equivalents.
USA
CHINA
It produce the most greenhouse gas in the world about 22,7
This two countries together produce 45% of world’ carbon dioxide
China and the US have unveiled new pledges on greenhouse gas emissions, as the leaders of the two countries met for talks in Beijing.
US President Barack Obama said the move was "historic", as he set a new goal of reducing US levels between 26%-28% by 2025, compared with 2005 levels.
China did not set a specific target, but said emissions would peak by 2030.
The two countries also agreed to reduce the possibility of military accidents in the air and sea.(not close)
The news came during a state visit by Mr Obama to Beijing, which followed a major Asian regional summit.
It is the first time China, the world's biggest polluter, has set an approximate date for emissions to peak.
The two
What is greenhouse gas?
A greenhouse gas is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. Many greenhouse gases occur naturally, such as water vapor, carbon dioxide, methane, nitrous oxide, and ozone. Others such ashydrofluorocarbons (HFCs),perfluorocarbons (PFCs), andsulfur hexafluoride (SF6) result only from human industrial processes. Greenhouse gases act like a blanket around Earth, trapping energy in the atmosphere and causing it to warm. This phenomenon is called the greenhouse effect and is natural and necessary to support life on Earth. However, the buildup of greenhouse gases can change Earth's climate and result in dangerous effects to human health and welfare and to ecosystems.
Human Activities and Greenhouse Gases
Human activities also add significantly to the level of naturally occurring greenhouse gases:
Carbon dioxide is released into the atmosphere by the burning of solid waste, wood and wood products, and fossil fuels (oil, natural gas, and coal).
USA THE SECOND
In 2012, US greenhouse gas emissions totaled 6,526 million metric tons of carbon dioxide equivalents.
USA
CHINA
It produce the most greenhouse gas in the world about 22,7
This two countries together produce 45% of world’ carbon dioxide
China and the US have unveiled new pledges on greenhouse gas emissions, as the leaders of the two countries met for talks in Beijing.
US President Barack Obama said the move was "historic", as he set a new goal of reducing US levels between 26%-28% by 2025, compared with 2005 levels.
China did not set a specific target, but said emissions would peak by 2030.
The two countries also agreed to reduce the possibility of military accidents in the air and sea.(not close)
The news came during a state visit by Mr Obama to Beijing, which followed a major Asian regional summit.
It is the first time China, the world's biggest polluter, has set an approximate date for emissions to peak.
The two