This constant unbalance is known as global warming. ... "By the time the magnitude of the change is truly in our faces, it will be too late to do much about it: There's such a lag time with carbon dioxide in the atmosphere that we need to be making the switch to solar and wind and hydrogen right about now"(p.592). ... Solar panels, windmills and hydropower are promising but it is still the minority in energy outcome. ...

• Word Count: 743
• Approx Pages: 3
• Has Bibliography
• Grade Level: Undergraduate

To maintain a constant average temperature, the Earth must radiate heat to space. ... For a very long period of time before the industrial age, the atmospheric concentration was essentially constant. ...

• Word Count: 2775
• Approx Pages: 11
• Grade Level: Undergraduate

The constant variation in the global climate is pushing many of our ecosystems towards thresholds of quick irreversible transformation, the approach to such tipping points is noticed by different transformations in the arctic tundra vegetation, widespread desertification of arid lands, and increase in freshwater inputs to the arctic seas. ... Arctic Ice Melting The arctic ice is known to provide large white surface for reflecting solar radiation away from the earth (Albedo effect ), but when these ice starts to melt it exposes a much darker part on the ocean surface, which absorbs more radiati...

• Word Count: 2460
• Approx Pages: 10
• Has Bibliography
• Grade Level: Undergraduate