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Great Barrier Reef, Australia
The largest coral reef in the world, which covers more than 133,000 sq miles (344,400 sq km), has long been an attraction Down Under. Yet increasing environmental challenges have been steadily eroding the structure for years now. From rising ocean temperatures to an influx of pollution, this natural wonder could be destroyed within the next 100 years.
The Dead Sea
The ancient and salty Dead Sea is the site of both history and healing. Yet in the last 40 years, the lake has shrunk by a third and sunk 80 feet. Experts believe it could disappear in as little as 50 years, due to neighboring countries drawing water from the River Jordan (the Sea’s only water source).
Glacier National Park, Montana
As the lowest-lying country on Earth – with an average elevation of around five feet above sea level – this beautiful island nation could be completely engulfed by water within the next 100 years if sea levels continue to rise. The risk has become so great the Maldivian government has purchased land in other countries for citizens who face displacement.
The epitome of a tropical paradise, the Seychelles is a collection of around 115 islands in the Indian Ocean and home to numerous luxury resorts (not to mention a population of nearly 90,000 citizens). Yet the islands are in danger due to beach erosion, after already seeing a devastating coral die-off. Some experts believe that in 50 to 100 years, the entire archipelago could be submerged.
Magdalen Islands, Quebec, Canada
With sandy beaches and sandstone cliffs, the Magdalen Islands are a lovely getaway spot in the Gulf of St. Lawrence. Yet the archipelago is regularly pelted by heavy winds and despite a wall of sea ice blunting the worst of the weather, the island’s coast currently erodes up to 40 inches a year. Even more troubling: that protective ice is rapidly melting. If experts are correct and the ice melts completely within the next 75 years, the island’s shores will be vulnerable to the area’s destructive storms.
Athabasca Glacier, Alberta, Canada
The most-visited glacier in North America, Alberta’s Athabasca Glacier is a part of the Columbia Icefield spanning 2.3 square miles (6 sq km). Yet the glacier has been melting for the past 125 years, with its Southern edge retreating nearly a mile in that timeframe. Experts believe the glacier is now shrinking at its fastest rate yet and is currently losing anywhere between 6.6 to 9.8 feet a year.