The recent "acqua alta" (high water) in Venice, Italy reached a depth of 1.56 meters (5 ft, 1 in.) on Monday - the deepest flood in 22 years, and the fourth highest flood level in recent history, claimed Venice's Tide Center. The water began to subside on Tuesday, while residents and tourists made their way through the city, hip-waders or not - one man even took the opportunity to ride his wakeboard through Piazza San Marco (until police stepped in). Although this flood was severe enough for the mayor to ask tourists to temporarily stay home, Venetian floods are fairly routine, several occurring every year, and residents usually take it all in stride.

Venice under Water (25 photos total)





Photographer Mike Hettwer has been kind enough to share with us some of his photographs depicting what remains of the Green Sahara. About 9,000 years ago, a very wet climate prevailed in parts of the Sahara Desert called the Neolithic Subpluvial period. Lasting several thousand years, this Green Sahara was home to many grassland and woodland animals as well as humans. While on an expedition for dinosaur fossils with paleontologist Paul Sereno in Niger in 2000, Hettwer discovered a burial area containing hundreds of skeletons from two distinct cultures, each thousands of years old - the Kiffian and Tenerian.

Green Sahara (17 photos total)





And don't miss the Hubble Space Telescope Advent Calendar 2008

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