Instant Index: Chocolate May Help Memory

David Muir reveals the stories people have been buzzing about all week.
0:54 | 10/28/14

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Transcript for Instant Index: Chocolate May Help Memory
Straight to the index and just in time for all that Halloween candy. A new study from Columbia university saying chocolate may reverse memory loss as we age. Increasing blood flu to the brain. You'd knee to eat 25 chocolate bars a day, though. Researchers say that amount helped 60-year-olds perform like a 30-year-old on a memory test. Wow. And good samaritans caught on tape tonight. Watch and listen to this. Are you by yourself? Help! Is there anybody else in there? Really incredible. This happened in Virginia. Three men driving by heard screaming. Saw fire. Pulling over. Using a hammer to smash through the sunroof, picking that driver to safety before the car goes up in flames. And look at this tonight. A plane attempting to land off the coast of Portugal. A white knuckle moment for the speakers. Whoa. A pilot, though, with nerves of steel tonight.

This transcript has been automatically generated and may not be 100% accurate.

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