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Get a closer look at Episode 6, "Sound."
0:43
Host Steven Johnson explores how light has altered sleeping patterns and architecture.
0:44
Get a closer look at Episode 2, "Time."
0:31
See how innovators experiment with ways to control the creation and preservation of cold.
0:43
Host Steven Johnson reveals how clean water has changed our world.
0:30
Steven Johnson explores the power and the legacy of great ideas.
4:58
Here's what to look forward to in the episode 'Cold'.
4:03
Find out what is coming up in the episode 'Glass'.
4:55
Here's a taste of what's to come in the episode 'Clean'.
4:58
Steven tells how Frederic Tudor developed a method of transporting ice to warm climates.
4:26
Introducing Harvey Fletcher, the man who invented a meter to measure noise pollution.
4:59
How was the first long-lasting light bulb invented?