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Tuesday September 30th, 2003

Host

George Noory

Guest

Clip Streams

 
Rapid Climate Change
 
Melting Ice Caps

Recap

Future 'Wild Card' Scenarios

"The world is changing," said futurist John L. Petersen (arlingtoninstitute.org) in his appearance on Tuesday night's show. "If we don't figure out how to deal with [our] problems in new ways, then they're going to run over the top of us," he cautioned.

Petersen went on to discuss quantum computing, time travel, nanotechnology, rapid climate change, melting of the polar ice caps, and other possibilities that would vastly alter our daily experience.

Despite the scenarios, our future doesn't have to be grim. Petersen believes, "If we learn how to adjust to and adapt to these kinds of things, it could precipitate a whole new kind of world--a whole new way of living."

Related Articles

No More Ice

A recent NASA study predicts the Arctic Ocean will lose all perennial ice by the end of this century. Such an occurrence will have devastating impact on the Arctic region and start in motion a process that will change the climate dramatically.

"If the perennial ice cover, which consists mainly of thick multi-year ice floes, disappears, the entire Arctic Ocean climate and ecology would become very different," said Josefino Comiso, a researcher at NASA’s Goddard Space Flight Center, Greenbelt, Md., who authored the study.

Already, much of the perennial ice is gone. The following animation shows Arctic sea ice extent from January 1, 1990, and January 1, 1999, respectively. Click the two-directional arrow below and drag it along the timeline to see the polar ice caps recede.



As the ice melts, the Arctic waters will begin to warm. With less ice to reflect the sun's rays back into space, the ocean will absorb more of the sun's heat. Eventually, the melting will be become irreversible.

--S.L.

*Special thanks to Bill O'Connor for creating this Flash movie.

North Polar Dunes

This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows several dark sand dunes in the north polar region. (website)


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