The Hole in the Sky
NOVA travels to Antarctica with an emergency scientific expedition to study a baffling "hole" in the Earth's protective ozone layer.
More from Season 14
Episode 1
Countdown to the Invisible Universe
NOVA scans the universe with the infrared eye of IRAS—the Infrared Astronomical Satellite—and discovers never-before-seen comets, stars, galaxies and other celestial wonders and enigmas.
Episode 2
Children of Eve
NOVA examines a controversial theory that traces our ancestry to a small group of women living in Africa 300,000 years ago.
Episode 3
Why Planes Crash
Between 60 and 80 percent of all commercial airplane accidents are attributable to pilot error. NOVA looks at some shocking instances of pilot negligence and what airlines are doing to solve the problem.
Episode 4
Orangutans of the Rain Forest
NOVA cameras travel to Borneo, one of the last habitats of the wild orangutans, where scientists study the endangered ape. Who is observing whom? It is not always clear.
Episode 5
Freud Under Analysis
Fifty years after his death, the creator of psychoanalysis is still the subject of intense debate. Was Freud right or wrong? NOVA profiles the enigmatic man and his controversial legacy.
Episode 7
Confessions of a Weaponeer
Harvard chemist George Kistiakowsky was an anti-Bolshevik soldier in 1919 Russia, an atomic bomb scientist at Los Alamos, a presidential advisor in the Eisenhower White House and an arms control activist. Shortly before Kistiakowsky death, he recounts his eventful career to interviewer Carl Sagan.
