A look at some of history's most notable thinkers and innovators.
EPISÓDIO 1
Dangerous Heights
People who defy earthly forces and dream of high-flying adventures.
EPISÓDIO 2
Female Inventors
Breaking the glass ceiling is never easy, but for some female inventors, science comes at an added price.
EPISÓDIO 3
Against Nature
Nature is powerful and can snuff out life in an instant, but for three intrepid adventurers, nature holds mysteries just waiting to be discovered.
EPISÓDIO 4
Long Forgotten Tracks
Some discoveries lie in wait for those brave enough to venture out; from hidden cities in the jungle to dinosaur fossils and seeds in far-flung locales, the prize goes to those willing to take the risk.
EPISÓDIO 5
In the Name of Medicine
Although modern medicine is capable of incredible feats, the ability to treat the human body follows hundreds of years of experimentation -- at times with deadly results.
EPISÓDIO 6
Ahead of Their Time
A look at great thinkers who have left their mark on scientific discovery.
Tim White