Up Next
Back to Show
NOVA
Why is the Eiffel Tower Shaped Like That?
At the time of its construction, the Eiffel Tower was the tallest structure ever built. That meant that the engineers had a key challenge: making sure the structure could survive the wind.
Support Provided By
53:30
Discover the fascinating chemistry that makes our world and everything in it—including us.
53:31
Discover the fascinating chemistry that makes our world and everything in it—including us.
53:21
Can bringing predators—and fear—back into an ecosystem help restore its natural balance?
1:52:46
Paleontologist Kirk Johnson explores the dynamic history—and future—of ice at the poles.
53:30
Discover the science behind Leonardo da Vinci's masterpieces—and Mona Lisa's iconic smile.
53:15
Amazing fossils reveal how mammals took over after an asteroid wiped out the dinosaurs.
Unlock with PBS Passport
53:32
Discover why scientists and entrepreneurs alike have their sights set on the Moon again.
