Vernal Equinox (First Day of Spring)

What is the Vernal Equinox?
http://www.almanac.com/content/first-day-spring-vernal-equinox

Click here to see the earth's rotation on the Equinox.
http://vortex.plymouth.edu/sun/sun3b.html
http://vortex.plymouth.edu/sun/sun3c.html
http://vortex.plymouth.edu/sun/sun3d.html

Find and read a poem you like about spring:
http://www.poetryfoundation.org/spring-poems

Measuring your Carbon Footprint

How to Reduce your Carbon Footprint

http://tiki.oneworld.net/global_warming/climate9.html

Carbon Calculators

http://icountcarbon.net/index.htm

http://www.nature.org/greenliving/carboncalculator/

http://www.footprintnetwork.org/en/index.php/GFN/page/calculators/

Carbon calculators for Kids
http://www.cooltheworld.com/kidscarboncalculator.php

Click below to measure the Carbon Footprint in 1900
http://icountcarbon.net/1900_carbon_footprint.htm

Click below to measure the Carbon Footprint in 1750

http://icountcarbon.net/1750_carbon_footprint.htm