Nova scienceNow
- Episode aired Jul 24, 2007
- TV-PG
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 ... Read allA 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... Read allA 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 g... Read all