The exquisite sensitivity of touch cells in the human skin makes it possible for us to discriminate with precision the slightest changes in texture and pressure, but how the electrical impulses we receive are converted into sensation remains a mystery. NOVA explores the hidden meaning and extraordinary power of human touch.
NOVA tells the story of still and cine photography in science—from the extraordinary work of the pioneers in the early 1800s to how the ability to freeze time on film in ever shorter periods has given scientists remarkable new insights. Today photography enables us to analyze (frame by frame) the thousands of molecular reactions that can happen in less time than the blink of an eye.
Water, water everywhere...but just how useful is it? NOVA travels to the Adirondack Mountains where acid rain is killing many high elevation lakes; to the Mississippi River where chlorine has combined with natural and manmade organic chemicals to form cancer-causing toxic chemical substances; to California, where conservation recycling has had to become a way of life; and to Bedford, Massachusetts, where the town wells have been contaminated by industrial waste.
Thomas Edison is the quintessential American hero, the Wizard whose inventions revolutionized modern living. But there was always more to Edison than met the eye. He was a complex and contradictory man; a brilliant inventor, a foolish investor; a demanding boss, a liberal benfactor—a public figure that no one ever really knew. NOVA profiles the man behind the mythical reputation.
On Wednesday, 12 November 1980, Voyager 1 is expected to arrive at Saturn for a first time ever extensive close-up investigation of the majestic ringed planet. Astronomers can expect to gather more information than ever before possible. On the day before this historic event, NOVA documents Voyager's journey through the outer Solar System.
Locked in the shale of the Western Rocky Mountains is more oil than in the Middle East—more than enough to solve our dependence on foreign crude oil. But will shale oil solve our gasoline shortage, or will it simply turn the Rockies into a gigantic industrial zone? NOVA explores the promise and the problems of shale oil.
Every year, millions of tourists converge on the Mediterranean's sunny coasts, lured by the prospect of bathing in clear, azure waters and basking in semi-tropical sun. But years of use and abuse have taken their toll on the once idyllic Mediterranean and the "world's biggest swimming pool" has become the world's biggest open sewer. NOVA explores the complex problems that plague the Mediterranean's future.