We in the midwest (and southeast) are in the midst of an insufferable heatwave. I for one happen to not like hot temperatures. So it seems a good time to suggest a solution to the problem of extreme heat suffered here and even moreso in other regions of the world (especially the two-thirds world). Concerned about global warming? Concerned about the extreme heat that must contribute to the plight of the poor overheated souls in the Middle East and elsewhere? (What you thought it was poverty or religious extremism that led to the aggressiveness of some?)
Allow me to present to you World Jump Day. The idea is to get at least 600 million people in the Western hemisphere to jump simultaneously on July 20, 2006. Apparently there are 
scientists in Germany who study such things and have concluded that such an impact would have the result of altering the Earth’s orbit around the sun. The result of such an alteration would be the dramatic reduction of global warming, an extension of daytime hours (of course one wonders if the extension of daylight for some would result in loss of daylight for others – which seems to make sense to me given the shape of the earth and the fact that its rotation would not necessarily be altered), and a more habitable average temperature for everybody!
Who knew it was that easy to fix all the world’s problems? So in the immortal words of Van Halen, “Go ahead, jump!”