Astrophysicist and author Carl Sagan managed to predict a lot of the things the challenges America faces in the year 2021 all the way back in 1995 when he was writing a book published just before his death in 1996. MSNBC's Brian Williams shares the details.

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About The 11th Hour with Brian Williams: Brian Williams delivers the latest updates on evolving news stories and places the major political events of the day into context for viewers. Broadcast live from New York, Williams' show convenes a dynamic panel of guests to offer a forward-thinking look at the critical stories that are expected to drive the conversation the following morning. Williams has also anchored MSNBC's special coverage around key political events and major breaking news stories as they occur domestically and around the world.

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