For billions of years, life teemed in Earth's oceans while the land was desolate and inhospitable. See how life made the leap to land, transforming a barren, rocky landscape into the lush, green world we call home.
Duration: 56 minutes and 46 seconds
Episode Number: 5013
No future air times were found for this episode.
PBS' premier science series helps viewers of all ages explore the science behind the headlines.
Along the way, NOVA programs demystify science and technology and highlight the people involved in scientific pursuits.
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| Sat, Jan 17 | 11:00 A.M. | NOVA Universe Revealed: Milky Way NH Explore (11.2) |
| Sat, Jan 17 | 1:00 P.M. | What Are UFOs? NH Explore (11.2) |
| Sun, Jan 18 | 12:00 A.M. | What Are UFOs? NHPBS (11.1) |
| Sun, Jan 18 | 4:00 A.M. | What Are UFOs? NH Explore (11.2) |
| Sun, Jan 18 | 7:00 A.M. | What Are UFOs? NHPBS (11.1) |
| Sun, Jan 18 | 8:00 P.M. | What Are UFOs? NH Explore (11.2) |
| Sun, Jan 18 | 10:00 P.M. | NOVA Universe Revealed: Milky Way NH Explore (11.2) |
| Mon, Jan 19 | 12:00 A.M. | What Are UFOs? NH Explore (11.2) |
| Mon, Jan 19 | 2:00 A.M. | NOVA Universe Revealed: Milky Way NH Explore (11.2) |
| Tue, Jan 20 | 7:00 P.M. | What Are UFOs? NH World (11.3) |
| Wed, Jan 21 | 12:00 A.M. | What Are UFOs? NH World (11.3) |
| Wed, Jan 21 | 8:00 A.M. | What Are UFOs? NH World (11.3) |
| Wed, Jan 21 | 9:00 P.M. | Asteroids: Spark of Life? NHPBS (11.1) |
| Thu, Jan 22 | 1:00 A.M. | Asteroids: Spark of Life? NHPBS (11.1) |
| Fri, Jan 23 | 3:00 P.M. | Asteroids: Spark of Life? NHPBS (11.1) |
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