Season 34, Episode 21 Nova scienceNow
First Aired: July 24, 2007
A look at how environment may affect DNA, turning on and off specific genes; the “Kryptos” sculpture at CIA headquarters, which contains coded messages; homemaker-turned-paleontologist Mary Schweitzer, who discovered spongy tissue in a 68 million-year-old T. rex; Duke mathematics and physics professor Arlie Petters, who is working to prove the “braneworld” theory of gravity, which posits that there are five dimensions (four spatial, plus time).
Next On TVSee all »
Cast & Details See all »
- Premiered: March 3, 1974
- Rating: None
- Premise: PBS's premier science-documentary series, which has won six Peabody Awards and more than 20 Emmys (four in 2002 alone) since its 1974 debut. `Nova' clearly, and often engagingly, `demystifies' a vast range of science, technology and history topics---past a… (more)
Trending TonightSee all »
By Chicago Review PressBuy New: $16.66
By Temple University PressBuy New: $25.92
Beginning Jazz Bass: How to Create Jazz Bass Lines Including Two-Feel, Walking Bass, Bossa Nova, Ballads, Fills & More!
By Musicians Institute PressBuy New: $17.37