Summary: The Dow closed up 56 points today, despite reported threats from N. Korea. Cramer goes Off The Charts to see if AAPL's pain could be the rest of tech's gain. Then, Jim checks up on IMGN, SGEN and ONXX. Is it time to join them in the fight to curb cancer? Plus, leverage ETFs promise more fire power, but wondering why the numbers don't always add up? Cramer opens your eyes to a potential solution.
