PacSci-Doku: "Quickly Disappearing" Answer
By Dennis Schatz - Senior Vice President for Strategic Programs
The question in this edition is:
What has shrunk by more than 20% in the last 30 years?
The answer: Polar Ice
Scroll down to see the solution.
On September 19, the arctic ice shrank to its smallest size for the year. Although at what seems like a large number (3.4 million square kilometers - about 1/3 of the size of the 50 United States), it was 800,000 square kilometers (the size of California and Montana combined) smaller than the record set in 2007 - and around half the ice coverage 30 years ago.
So why should we care? With less white ice at the pole, less sunlight gets reflected back into space and global temperatures rise. Higher temperatures result in more extreme weather, such as more severe hurricanes and tornados. Learn more about the shrinking polar ice and its impact on the Earth and human activities. And don't forget you can learn more about polar science at our 8th annual Polar Science Weekend February 28-March 3, 2013. Learn More
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