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The ozone layer is a layer in the Earth's atmosphere which contains relatively high concentrations of ozone (O3). This layer absorbs 93-99% of the sun's high frequency ultraviolet light, which is potentially damaging to life on Earth. It is mainly located in the lower portion of the stratosphere from approximately 10 km to 50 km above Earth's surface.

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PBS - What's Up With the Weather?

http://www.pbs.org/wgbh/warming/

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GCSE - Climate Change

http://www.gcse.com/energy/climate_change.htm

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Family Columbidae: (doves and pigeons)

http://animaldiversity.org/site/accounts/information/Columbidae.html

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Rodrigues Solitaire

http://en.wikipedia.org/wiki/Pezophaps_solitaria

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Rock Dove

http://www.mbr-pwrc.usgs.gov/id/framlst/i3131id.html

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AssetSmart

http://www.assetsmart.com/

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Re-tek UK

http://www.re-tek.co.uk/

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Computer and Telecommunications Equipment Recycling

http://www.recycle.net/recycle/computer/

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Global Recycling Network

http://grn.com/

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WebDirectory - Recycling

http://www.webdirectory.com/Recycling/

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The Paper Stock Report

http://www.recycle.cc/psrpage.htm

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Bureau of International Recycling (BIR)

http://www.bir.org/

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BioHydrogen

http://www.biohydrogen.nl/

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National Center for Remanufacturing and Resource Recovery

http://www.reman.rit.edu/

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NPR : The Afterlife of Garbage

http://www.npr.org/templates/story/story.php?storyId=5027659

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DHI: Water Resources

http://www.mikebydhi.com/Products/WaterResources.aspx

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HCP Software Pty Ltd

http://www.hcp.net.au/

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nofdp IDSS

http://nofdpidss.sourceforge.net/

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