Natural sources of atmospheric CO2 include outgassing from volcanoes, the combustion and natural decay of organic matter, and respiration by aerobic (oxygen-using) organisms. As the human population has increased, so has the volume of fossil fuels burned. Geneva (Reuters) – Obesity . Global warming is the long-term heating of Earth’s climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth’s atmosphere. With regard to global warming, all nations have an interest in stopping it. Within scientific journals, this is still how the two terms are used. may lead to increase in kidney . Global warming is happening now, and scientists are confident that greenhouse gases are responsible. This is a photo of Earth taken by the EPIC imager on the DSCOVR satellite on March 29, 2017. The basic physics of global warming are as well understood as any scientific phenomenon. May 15, 2008 . (And yes, it's really happening.) June 18, NIA - Global warming could lead . June 26, 2008. Global warming is the long-term warming of the planet’s overall temperature. A: Here's a simple definition of global warming. Solving global warming is sometimes described as a prisoner’s dilemma. We often call the result global warming, but it is causing a set of changes to the Earth's climate, or long-term weather patterns, that varies from place to place. The Earth receives its warmth from the sun, so it's reasonable to suspect that our home star may be one of the reasons for global warming. Despite that, many nations are unwilling to pay the cost of switching to a green economy. ScienceDaily – Global Warming . Global warming refers to the steady temperature rise on our planet. to increased terrorism. GLOBAL WARMING: WHAT, HOW, WHY? To understand what this means for humanity, it is necessary to understand what global warming is, how scientists know it's happening, and how they predict future climate. A prisoner’s dilemma is a situation where two people fail to cooperate despite shared interests. AP - Earthquakes stronger due . May 15, 2008 . Although the amount of energy coming from the sun does vary and may have been responsible for warming in the past, however, NASA and the Intergovernmental Panel on Climate Change (IPCC) have ruled this out as a cause of the current warming … (And yes, it's really happening.) Global warming - Global warming - Carbon dioxide: Of the greenhouse gases, carbon dioxide (CO2) is the most significant. Climate change: a long-term change in the Earth’s climate, or of a region on Earth. to global warming. contributes to global warming, too. 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