CNN Student News - November 20, 2014 - CNN.com November 19, 2014 -- Updated 2203 GMT (0603 HKT) (CNN Student News) -- November 20, 2014 Once you see what's happening in Buffalo, New York, you'll understand why we're defining lake-effect snow at the beginning of today's program. The Keystone XL Pipeline and a possible chocolate shortage are examined in depth. And the third installment in our series on affording college takes you to a private campus where students can work down their tuition.