<blockquote>''Nature's first green is gold, her hardest hue to hold.''<ref>http://www.english.uiuc.edu/maps/poets/a_f/frost/gold.htm</ref></blockquote>
<blockquote>''Nature's first green is gold, her hardest hue to hold.''<ref>http://www.english.uiuc.edu/maps/poets/a_f/frost/gold.htm</ref></blockquote>
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Green is also a term used to refer to environmentally friendly products. So ''green'' energy could be [[hydroelectric]] for instance, instead of [[fossil fuels]].
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Green is also a term used to refer to environmentally friendly -- and typically inefficient -- products. So ''green'' energy could be [[hydroelectric]] for instance, instead of [[fossil fuels]].
The color green corresponds to [[wavelength|wavelengths]] of 520 nanometers to 565 nanometers in the [[electromagnetic spectrum]].<ref>http://hyperphysics.phy-astr.gsu.edu/hbase/vision/specol.html#c1</ref>
The color green corresponds to [[wavelength|wavelengths]] of 520 nanometers to 565 nanometers in the [[electromagnetic spectrum]].<ref>http://hyperphysics.phy-astr.gsu.edu/hbase/vision/specol.html#c1</ref>