One way would be to fill much of the city that's below sea level.
Substantial parts of Mumbai, a city of around 20m people, are already below sea level.
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In the Netherlands, where large areas are below sea level, the 1953 surge killed more than 1, 700 people.
An earthquake could flood much of the Delta, which is below sea level.
McMoran has been developing expertise in drilling at extreme depths below sea level in the shallow waters of the gulf.
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Mayor Ray Nagin has estimated the death toll could reach 10, 000 in the city, most of which lies below sea level.
The surface of the inland waterway sits at the lowest land point on the planet, more than 400m below sea level.
That year a Shell-Texaco venture will begin producing natural gas from the 3-km-by-15-km Malampaya field 750 to 1, 150 meters below sea level.
New Orleans sits mostly below sea level on swampland on the east bank of the Mississippi River and south of Lake Pontchartrain.
This machine could take passengers over a 1, 000 feet below sea level allowing them to explore marine life rarely seen by the world.
The state geologist is on his way to the Netherlands to examine how they manage to survive at or below sea level.
"For foreigners, it is really frightening to be under sea level, and even more frightening to have the collection below sea level, " says Pijbes.
However, the fact that more ice rests below sea level means that on millennial timescales, increased amounts of ice are potentially vulnerable to ocean melting.
Since the streets of New Orleans sit mostly below sea level, it would very likely become a satellite submarine as the storm water surges into the city.
The cleanest approach would be to get rid of federal flood insurance entirely and let the private market price the risks of living below sea level or in flood-prone areas.
The industrious Dutch have strong enough dikes and clever enough engineering to survive a one meter rise in the oceans, even though two-thirds of their country lies below sea level.
Robichaux liked the fact that it was on higher ground, 8 feet above sea level, compared with 4 feet below sea level at the school he was supposed to run, KIPP Phillips.
The road dips a precipitous path along the ridge from where the deep geological gash of the Great Rift Valley cascades downwards to meet its bottom at the Dead Sea, 400m below sea level.
Photographer Lewis Bush has been exploring the island of Canvey which sits below sea level, making pictures of the 14 miles of sea walls that now protects the residents and speaking to some of those who live there.
Back home, they had to deal with an utterly flat landscape laced by rivers and canals much of it below sea level, reclaimed by dikes forever loomed over by dark gray clouds, damp mists, and rain or snow.
To the east of Bethlehem, chalky hills sink below sea level towards the Dead Sea and the ancient city of Jericho, immortalized in the Bible for its walls that tumbled under the blasts of trumpets (Joshua 6:20).
The Ochsner clinic is a precious 7 or 8 feet above sea level, a distance that has kept it from being flooded out of commission like other hospitals on land in New Orleans, much of which is below sea level.
Palestinian and Austrian companies are investing heavily in Oasis, a sprawling tourist complex below sea-level in the desert.
Here's one example why we should care: in 1977, diving in the human occupied vehicle Alvin, scientists investigating a volcanic ridge 2500 m (1.5 miles) below sea-level found something totally unexpected -- lush ecosystems thriving at hydrothermal vents fueled by chemical energy released from the Earth's interior.
But engineers say the levees preventing this below-sea-level city from being turned into a swamp were built to withstand only Category 3 hurricanes.
The western slopes (below 1, 200 meters above sea level) are dominated by douglas fir (Pseudotsuga menziesii) and western hemlock (Tsuga heterophylla).
Located at the thin end of the Thames tidal estuary, it is considered to be one of the cities most under threat from rising sea levels with around 150 square kilometers located below high tide level -- home to more than one million Londoners.
This range is the size of the European Alps with the tallest peaks reaching 3, 000m above sea-level - and yet they are still hidden below more than a 1, 000m of ice.
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