"Release the dolphins!"

Steven visits a dolphin aquarium in Northern California to find out how dolphins naturally use echolocation to 'see'.

07 March 2015

1 minute

This clip is from

How We Got to Now with Steven Johnson—Sound

"Having trouble sleeping, Steven?"—Light
Duration: 02:12
Meet Frederic Tudor—Cold
Duration: 01:46
The job where every second counts—Time
Duration: 02:04
What do toilets and iPhones have in common?—Clean
Duration: 01:46