Global warming

Global warming is the rise in the average temperature of Earth's atmosphere and oceans since the late 19th century, and its projected continuation. Since the early 20th century, Earth's mean surface temperature has increased by about 0.8 °C , with about two-thirds of the increase occurring since 1980. Warming of the climate system is unequivocal, and scientists are more than 90% certain that it is primarily caused by increasing concentrations of greenhouse gases produced by human activities such as deforestation and the burning of fossil fuels. These findings are recognized by the national science academies of all major industrialized nations. Climate model projections are summarized in the 2007 Fourth Assessment Report (AR4) by the Intergovernmental Panel on Climate Change (IPCC). They indicate that during the 21st century the global surface temperature is likely to rise a further 1.1 to 2.9 °C for their lowest emissions scenario and 2.4 to 6.4 °C (4.3 to 11.5 ...
Freebase CC-BY
Source: Global warming on Freebase, licensed under CC-BY
Rj Gopal
Rj Gopal commented on the blog by Rahul Arya
on Jan 27, 2015 , 10:55 am
Rahul Arya - Neodeterminism
A geographer, Griffith Taylor introduced another concept which reflects a middle path (Madhyam Marg) between the two ideas of environmental determinism and possibilism. He termed it asNeodeterminism or stop and go determinism.Those of you who live in cities and those who have visited a city, might have seen that traffic is regulated by lights on the cross-roads. Red light means ‘stop’, amber light provides a gap between red and green lights ‘to get set’ and more »
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Nishant Sharma
Nishant Sharma commented on the video by Brad Pathak
on Jan 25, 2015 , 09:02 pm
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Narasa.rao24
Narasa.rao24 and 7 more commented on the discussion by Sanjaykumar Patel
on Jan 24, 2015 , 05:38 am
Sanjaykumar Patel - Effect of global warming in india
Today global warming is very much increased in the world and main effect can be felt in india. more »
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Hushar Manus
Hushar Manus
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