This product image provided by Discovery shows a science lesson on Superstorm Sandy for students in grades six through high school. Discovery’s lessons _ branded “Techbooks” run on laptops, desktops, iPads or other tablets. (AP Photo/Discovery)

Associated Press
This product image provided by Discovery shows a science lesson on Superstorm Sandy for students in grades six through high school. Discovery’s lessons _ branded “Techbooks” run on laptops, desktops, iPads or other tablets. (AP Photo/Discovery)
This product image provided by Discovery shows a science lesson on Superstorm Sandy for students in grades six through high school. Discovery’s lessons _ branded “Techbooks” run on laptops, desktops, iPads or other tablets. (AP Photo/Discovery)
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