Nature's Time Capsules

By studying bogs, scientists can uncover thousands of years of Earth’s history.
Aired: 4/15/2014 | 0:02:07

Upcoming NOVA Air Dates

  • WLIW21 Secrets of Noah's Ark Wednesday, Oct. 14 2:00pm
  • THIRTEEN Cyberwar Threat Wednesday, Oct. 14 9:00pm
  • WLIW21 Secrets of Noah's Ark Thursday, Oct. 15 1:00am
  • WLIW21 Petra - Lost City of Stone Thursday, Oct. 15 4:00am

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