Season 2

01 Why Do Birds Sing? Episode 13rd November 1974 NOVA travels to forests and marshes to discover why birds sing and finds surprising parallels with the acquisition of speech in humans. 02 How Much Do You Smell? Episode 210th November 1974 Many insects and some mammals use smell as a primary means of communication. NOVA explains how, for example, the entire economy of an ant's nest is organized by smell, and how some moths use smell for population control—an ability we is now beginning to understand. 03 The Hunting Of The Quark Episode 317th November 1974 Smashing matter into ever smaller pieces in an attempt to find its fundamental building blocks has produced a confused nightmare of particles. NOVA looks at this on-again, off-again story—one of sciences's most mysterious—and, one of the most expensive, involving some of the biggest machines in the world. 04 The Secrets Of Sleep Episode 424th November 1974 Most of us spend one-third of our lives in a state of which we understand remarkably little—some people sleep for only a few minutes a night, and function perfectly well, while others declare that eight hours isn't enough. NOVA explores traditional notions about how much sleep we need; looks at effects of the sleeping pill, and, perhaps the most baffling of all aspects of sleep—dreaming. 05 Inside the Golden Gate Episode 51st December 1974 NOVA joins a team of U.S. Geological Survey scientists on a mission to find out just how San Francisco Bay works: its physics, its chemistry and its biology. 06 The Men Who Painted Caves Episode 68th December 1974 Just why did Cro-Magnon man living in France's Dordogne Valley some 15,000 years ago take time out from the desperate business of survival to paint pictures in inaccessible corners of his cave dwellings? NOVA joins French and American archeologists as they piece together the lifestyle of these hunters of the last great Ice Age, and try to interpret the meaning of their cave art. 07 Red Sea Coral Episode 715th December 1974 NOVA joins a group of English biologists living literally on a platform in the middle of the Red Sea, who for several years have been studying the crown-of-thorns starfish, notorious for the devastation it has wrought on the coral reefs of Australia and the Pacific. 08 War From the Air Episode 85th January 1975 09 What Time is Your Body? Episode 912th January 1975 Have you ever sensed that your body reacts differently at different times of the day? NOVA examines the best and worsetimes for work, good times for sex drives and your body's most reactive time of day for alcohol consumption. 10 The Rise And Fall Of DDT Episode 1019th January 1975 Has the case against DDT been proven? A strange question, perhaps, to be asking one year after the US has banned the insecticide, but NOVA dares to ask. Tracing the history of DDT from its discovery through its banning in the States, NOVA asks whether America overreacted with its total ban of this once acclaimed "wonder" chemical. 11 Take the World From Another Point of View Episode 112nd February 1975 NOVA profiles two very different scientists: Richard Feynman, a theoretical physicist, at the pinnacle of his career—a Nobel prizewinner; and Richard Lewontin, a biologist and highly regarded population geneticist from Harvard University. 12 The Lysenko Affair Episode 129th February 1975 NOVA explores T.D. Lynsenko's rise to power in the Soviet Union in the early 20th century, and how it affected plant genetic research in the USSR. 13 The Tuaregs Episode 1316th February 1975 High in the Hoggar Mountains, in the exact center of the Sahara desert, lives Sidi Mohammed and his family: children, grandchildren, cousins and a few former slave women. Their environment, one of the most ungenerous on earth, provides them with almost nothing. NOVA examines the changing lifestyle of Sidi Mohammed. 14 The Plutonium Connection Episode 149th March 1975 How likely is it that a terrorist group will steal plutonium intended for nuclear reactor fuel and put together a blackmail weapon of unprecedented power in the shape of a homemade atom bomb? That question is posed by Theodore Taylor, former A and H bomb designer at Los Alamos, in a recent book, The Curve of Binding Energy. NOVA investigates just how easy it would be to design a bomb using unclassified information. 15 The Other Way Episode 1516th March 1975 Since the Industrial Revolution, bigger has been better. NOVA profiles E.F. Schumacher, the author of Small is Beautiful, who thinks that enough is enough; that the time has come for technology to return to a human scale, where the ability to create is returned from the machine to people. 16 The Lost World Of The Maya Episode 1630th March 1975 For over a thousand years the Mayan civilization grew and flourished in the rain forests of Central America. Discovered and finally destroyed by the Spanish Conquistadors, it was lost again until explorers brought it to light in the 19th century. Eric Thompson, an archaeologist who has had a 45 year love affair with the Maya, takes NOVA on a pilgrimage through the Mayan world, visiting, on the way, all the great ruined cities he has known for half a century. 17 Will The Fishing Have to Stop? Episode 176th April 1975 Fish is an excellent source of protein; it could help ease the growing international food shortage. But in 1972 the total world fish catch dropped. NOVA explores the possible reasons for this decline.