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Instant Index: Apollo 17's Lunar Launch Anniversary, Pearl Harbor Remembrance Day

Diane Sawyer reveals the top stories that have people buzzing this week.
1:34 | 12/07/12

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Transcript for Instant Index: Apollo 17's Lunar Launch Anniversary, Pearl Harbor Remembrance Day
Time now for our "instant index." Moments that changed history tonight. And, there's a clue to the first one, in this quote. I looked back at earth in all its splendor and called it sitting on god's front porch. That was astronaut commander eugene cernan, the last man to set forth on the moon, and it was 40 years today. He carved his daughters initials on a moon rock, by the way. So, tonight, up there somewhere, the initials tdc are looking down at all of us. And our person tonight is the name of john silva, but if the name doesn't ring a bell, the video might. O.J. Simpson in the white ford bronco, chased by police on the 405 freeway in los angeles. That footage, or, even this chase today in miami, would not ve been possible without silva. He was the first person to put tv cameras in a helicopter, creating a kind of tv station in the sky. And he died at the age of 92. And, one more anniversary. It is our number, 71 years ago today. On this day in 1941, pearl harbor was attacked. And the greatest generation rose up to defend america's freedom in the pacific. Flags were flown at half staff across the country today, to honor the more than 2,400 americans killed in the attack at pearl harbor. And, we really do love hearing from you, what captures your imagination every day. So, tweet me your thoughts for the "instant index, index," @dianesawyer. And, coming up, you remember

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

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