Back to Show
Watch Preview
NOVA
Why Bridges Collapse
Season 46
Episode 18
In 2018, Italy’s Morandi Bridge collapsed, tragically killing 43 people. For 50 years, the iconic bridge had withstood the elements—and stress from ever-increasing traffic. What went wrong that fateful day? And how can new engineering technology protect bridge infrastructure to prevent such tragic failures in the future?
Support Provided By
53:45
Follow the surprising evolutionary journey that led to the majestic elephant.
53:46
Discover the untold story—full of surprising evolutionary leaps—behind every bite we take.
53:34
The story of the dolphin reveals how intelligence evolved, step by step, over billions of years.
Unlock with PBS Passport
53:42
Step into the stunning cave that’s reshaping our understanding of prehistoric art.
Unlock with PBS Passport
53:41
Witness how Native North Americans have generated scientific knowledge over thousands of years.
53:34
Follow the relentless quest that led to a breakthrough treatment for a deadly disease.
Unlock with PBS Passport
53:40
Archaeologists investigate the dramatic origins of democracy in ancient Greece 2,500 years ago.
53:08
Follow the Artemis mission to bring humanity back to the Moon for the first time since Apollo.
Unlock with PBS Passport
53:25
Surprising evidence at the world’s oldest temple overturns our understanding of human history.