Changes

==Global Warming on other Planets==

==Global Warming on other Planets==

And it's not just the earth that has variations.  Since the Viking spacecraft reached Mars in the 1970's until recent readings were taken, the average temperature on Mars has risen 1.1 degrees Fahrenheit just as the average temperature on the earth has risen.  Since human industrialization is probably not to blame for the change on Mars, other causes are being considered.  The scenario most postulated is that dust storms change the albedo of the planet, allowing it to warm,<ref>http://www.space.com/scienceastronomy/070404_gw_mars.html</ref> although solar conditions are certainly a possibility.{{fact}} Some scientists have postulated it may be a local phenomenon rather than a global one.

And it's not just the earth that has variations.  Since the Viking spacecraft reached Mars in the 1970's until recent readings were taken, the average temperature on Mars has risen 1.1 degrees Fahrenheit just as the average temperature on the earth has risen.  Since human industrialization is probably not to blame for the change on Mars, other causes are being considered.  One possibility is that dust storms are changing the albedo of the planet, allowing it to warm, while another possibility is that solar variations from the sun are causing the warming.<ref>http://www.space.com/scienceastronomy/070404_gw_mars.html</ref><ref>http://www.heartland.org/Article.cfm?artId=17977</ref>

Recently, it has also been found that similar to the earth and Mars, that [[Neptune]] is undergoing global warming as well.  Measurements taken at the Lowell observatory in Arizona have shown an increase in Neptune's brightness and temperature since 1980 following the same pattern found on the earth, and Mars.  The researchers who discovered this warming suggest there may be a correlation between the warming and solar variations.<ref>http://www.agu.org/pubs/crossref/2007.../2006GL028764.shtml</ref>

Recently, it has also been found that similar to the earth and Mars, that [[Neptune]] is undergoing global warming as well.  Measurements taken at the Lowell observatory in Arizona have shown an increase in Neptune's brightness and temperature since 1980 following the same pattern found on the earth, and Mars.  The researchers who discovered this warming suggest there may be a correlation between the warming and solar variations.<ref>http://www.agu.org/pubs/crossref/2007.../2006GL028764.shtml</ref>

==Politics of global warming==

==Politics of global warming==