Put lids on ball parks.

http://www.iei.net/~tryan/h-colfor.htm "There was no roof on the Colosseum, but in the summer great canvas sheets were rigged to the top to form awnings that kept the sun off everyone inside." If the ancient Romans could do it we can do it. Cover the ball parks. My recent post about not playing in wet cold conditions resulted in this post, which addresses half of the equation. I am guessing that it would be relatively easy to develop retractable soft covers, probably made of something more high tech than canvas. Anything would be preferable to the travesty of 2008 World Series game five, which took three days to finish and which was tied in the sixth inning during a driving rain storm. MLB has no shame.