NOVA follows a team of scientists as the monitor the Martian rovers Spirit and Opportunity. Spirit runs into some problems, but Opportunity takes a photograph that may confirm the existence of water on Mars.
There are few more tantalizing or notorious historical documents than the Vinland map. A faded, yellowing scrap of parchment bearing a faint tracery of lines, the map apparently shows the eastern seaboard of North America-yet it was drawn at least half a century before Columbus reached the New World. It seems to present unshakeable proof that the Vikings were the real discoverers of the Americas. But for 40 years, a bitter debate over its authenticity has raged among cartographers, historians, and scientists. Despite chemical analysis and radiocarbon tests, the case ...
In 1909, French aviation pioneer Louis Blériot becomes the first man to cross the English Channel in a heavier-than-air machine, Blériot's own Type XI monoplane. Nearly a century later, his grandson and namesake attempts a re-enactment of the historic flight that made his grandfather famous and catapulted France to the forefront of aviation technology.
The Channeled Scablands in Washington state defied conventional explanations for their formation for decades. Little by little evidence mounted for an old theory that was rejected by the scientific establishment. It involved glaciers, volcanoes, a relatively minor river and a prodigious amount of water.
Volcanologists climb into the caldera of Mount Nyiragongo, an active and unstable volcano, to collect samples the will help determine when, where and how it is likely to erupt next. Two million souls in the nearby city of Goma depend on the results.