136 large coastal cities are at risk!
• We’re causing this?
• It can’t be helped?
It’s easy to get lost in this complex issue.
Without going into great detail, let us cite some numbers from
[But you have to use the DOOR for more.]
The September 2013 issue of National Geographic has an outstanding extended article of what’s happening to water on our planet written by Tim Folger and photographed by George Steinmetz. We recommend it. All information below was gleaned from this article–but not in the order given below.
• 40 million people are now at risk from sea level rise in those 136 cities.
• 3 trillion dollars is the value of assets at risk.
• Recently, Superstorm Sandy erased more than 30 ft. of shoreline in New Jersey. With rising sea levels, giant storms will increasingly inundate low-lying areas and be especially ruinous. This threat will never go away, only worsen.
• Rising sea levels occur for 3 reasons: (1) In places, land is sinking. (2) As seawater warms, it expands. (3) As glaciers melt the water level goes up.¹
• Since 1900, global sea level has risen about 8 inches.
• Currently, sea level is rising at about 1/8 inch per year–and accelerating.
• If sea level rises an average of 3 ft. by 2070,
the TOP 5 CITIES AT RISK are
(2) Guangzhou (in China)
(3) New York
(4) Kolkata (Calcutta)
The TOP 5 CITIES WITH AT RISK with 10 million or more people are
(2) Mumbai (Bombay)
(3) Dhaka (in China)
(5) Ho Chi Minh City
We’ve had much change in the shape of our land area in ages past. Since many people and much business hug ocean shorelines, dramatic upheavals lie ahead.
¹One of the very unusual characteristics of water is that in its solid form (ice), a given mass of water weighs slightly less than it did in liquid form. (For example, ice cubes float.) Hardly any other liquid is like that. That is one of the reasons fish and other water organisms don’t freeze to death in winter. As water freezes, it floats to the surface, insulating the water beneath it. Hence, a great deal of water “lurks” overhead in arctic regions. As glaciers and icebergs melt into liquid, sea level then “goes up.” This is one of many reasons water is essential to life. It can insulate delicate life from temperature extremes.