Transcript for Instant Index: Former President Bill Clinton Speaks About Hillary's Health
Here now, the surging topics, our "instant index." On the rise, former president bill clinton, who talked about his wife's health after her hospitalization, saying, don't be fooled. She's so healthy, she'll way outlive him and -- tell her that, you know, she's got time to have three more husbands after me. So, I think she'll live to be 120. And I always know that she's thinking about that, when I am stubborn about something in our constant quest in my self-improvement, she refers to me as her first husband. He said hillary's recent health scare was only the second time she'd ever spent the night in the hospital. The first was when she gave birth to chelsea. And the master of riddles and colds is back. Tom hanks, as you know, played robert langdon in the movie of "the da vinci code." And today, the author of the book, dan brown, announced a new book with a puzzle on his website. Each clue revealing itself with a tweet from a fan. The title "inferno," as in dante's "inferno" with its nine circles of hell. The book will come out in may. And, how about the new york skyline, in transition tonight and take a look at this. Sending a signal to the world, from the site of the world trade center. Today, that is the spire that will sit atop the new skyscraper there. Two cranes carefully installing the 70-ton base today. When all 408 feet of the spire are in place, one world trade center will stand 1,776 feet tall, for independence day, 1776, making it the tallest skyscraper in the western hemisphere. And if you see something out there that starts you talking, tweet it to me, @diane sawyer, for our "instant index."
This transcript has been automatically generated and may not be 100% accurate.