What are things made of?

It's a simple question with an astonishing answer. Fewer than 100 naturally occurring elements form the ingredients of everything in our world -- from solid rocks to ethereal gases, from scorching acids to the living cells in our body. David Pogue, lively host of NOVA's popular "Making Stuff" series takes NOVA on a roller coaster ride through nature's hidden lab and the compelling stories of discovery that revealed its secrets.