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Venice is the Mediterranean World Heritage Site currently most at risk from flooding due to sea level rise, according to a recent study, and the city even has elevated sidewalks ready in case of high tides, but Monday's waters rose higher than the emergency sidewalks. The tide surpassed 5 feet, 3 inches, making it the highest recorded since 2008 and potentially the highest recorded since 1979, CNN reported.

As sea levels rise, high-tide flooding is becoming a growing problem in many parts of the globe, including cities on the U.S. East Coast. Now, new research shows that as these waters recede, they carry toxic pollutants and excess nutrients into rivers, bays, and oceans

In 1900, an estimated 100,000 tigers roamed free on our planet. Yet within a hundred years, that number plummeted by more than 95 percent - the result of rampant poaching and widespread habitat loss. But it seems the tide may finally be turning for the majestic cat. On Sunday, the World Wildlife Fund (WWF) announced that wild tiger numbers were on the rise for the first time in over a century.

Sea level rise is caused primarily by two factors related to global warming: the added water from melting land ice and the expansion of sea water as it warms. The first chart tracks the change in sea level since 1993 as observed by satellites. The second chart, derived from coastal tide gauge data, shows how much sea level changed from about 1870 to 2000.

At the University of Miami's Department of Atmospheric Sciences, Brian McNoldy and other researchers have been accumulating sea level data from Virginia Key (a small island just south of Miami Beach) since 1996. Over those nineteen years, sea levels around the Miami coast have already gone up 3.7 inches.