Ground Water, definition of

Global warming is the name given to the theory that there is increase in the average temperature of the Earth surface air and oceans since the mid-20th century and its projected continuation.

The exact mechanism of warming is not precisely understood, although it is strongly suspected that Greenhouse gases are to blame, as increasing concentrations of such gases help trap heat in the atmosphere and so raise mean temperatures.

Wikipedia Entry

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• Efficient Water Usage and Storage
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  California has been making headlines for the gravity of its drought. The Los Angeles Times reported that January was the driest month on record since 1895. Other sites including this one have explained that the Golden State has just one year of water...
• California is pumping water that rained on Earth 20,000 years ago
  California has been making headlines for the gravity of its drought. The Los Angeles Times reported that January was the driest month on record since 1895. Other sites including this one have explained that the Golden State has just one year of water...
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• Tech Talk: The Technology of Grouting
  For the last two technical talks I have been explaining how, by bolting rock layers around an opening, spraying concrete on the walls of the opening or a combination of both, one can stabilize openings underground...