Instant Index: New Medical Review Says an Apple a Day Can Reduce the Risk of Stroke

Diane Sawyer reveals the stories people have been buzzing about all week.
1:41 | 05/08/14

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Transcript for Instant Index: New Medical Review Says an Apple a Day Can Reduce the Risk of Stroke
Our instant index today begins with two new notes from today about health starting with new confirmation an old saying about an apple -- -- A new medical review says -- every day can decrease the risk of stroke by 32%. How much fruit the equivalent of two apples every day it's. To kind of revolution underway as we learned today that the number of Americans -- biking to work has skyrocketed by 60%. In ten years. Bike share programs are -- so our new bike lanes across the country. And what started out as a photo -- for a wedding party on the beaches of Australia turned into a rescue mission watch and listen. -- rooms have been stripping down to their underwear when they hear a fisherman's cry for help his boat capsized they sprinted into the water and save the day. And even managed to get -- a picture with the bride and groom. Of little -- a little under drafts. And just when you thought it was safe to go back in the water watch what happened to a film crew in South Africa with cameras rolling a great white appears. Go straight for their boat which is an inflatable. Raft the shark -- down. -- again reminiscent of an iconic scene from the movie -- us. Back where the sharks swam away as the real life. Perhaps it was deflating but they are made it back to shore and tonight say they're haunted by the memory of the -- -- black eyes staring at them. It was biting down.

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

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