The Article "Are Jobs Obsolete?" by Douglas Rushkoff, Special to CNN

Essay

The article "Are jobs obsolete?" by Douglas Rushkoff, Special to CNN September 7, 2011, states the following (http://goo.gl/0aUXL):
"According to the U.N. Food and Agriculture Organization, there is enough food produced to provide everyone in the world with 2,720 kilocalories per person per day. And that's even after America disposes of thousands of tons of crop and dairy just to keep market prices high. Meanwhile, American banks overloaded with foreclosed properties are demolishing vacant dwellings to get the empty houses off their books."
a) Is it true that "America disposes of thousands of tons of crop and diary to keep market prices high?" (Search for additional sources of information in this regard.) What would be the effect of such policies on economic growth?
b) If there is a surplus of commodities in the developed world, why is it not given in aid to poor countries? (You may need to look for further information to answer this question.)