S41 E21: Killer Landslides Preview
Explore the forces behind deadly landslides—and the danger zones for the next ...
S41 E18: Strange Captain Strange
A pilot transforms how airplanes fight during WWI, but nearly plummets and dies ...
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S41 E17: Ben Franklin's Balloons
Experts recreate the French's daring first manned flights, which Franklin had ...
Hot air balloons let people soar into the sky, but they had their share of ...
S41 E19: Spinosaurus vs. Alligator
A tame alligator named Bubba betrays the secrets of the largest predator that ...
Do We Live in a Multiverse?
Could parallel universes exist? If so, what would they look like and how would ...
S41 E23: Surviving Ebola Preview
As the epidemic threatens to spiral out of control, scientists race to find a ...
Zombies and Calculus, Part 2
You're being chased by zombies, and understanding tangent vectors may save your ...
S41 E19: Bigger Than T. rex Preview
Meet Spinosaurus—the lost killer of the Cretaceous and the world’s larger ...
S41 E20: Emperor's Ghost Army Preview
Explore the buried clay warriors, chariots, and bronze weapons of China’s ...
S41 E14: Vaccines—Calling the Shots
Examine the science behind vaccinations, the return of preventable diseases, and ...
Secrets of Urban Archaeology
Urban archaeologists dig for stories beneath city streets.
S41 E17: Ben Franklin's Balloons Preview
Experts recreate the French’s daring first manned flights, which Franklin had ...
S41 E18: First Air War Preview
How did fighter planes evolve from rickety biplanes to deadly machines during ...
S41 E14: U.S. Polio Vaccines: Then and Now
The polio vaccine's history extends more than fifty years.
S41 E14: A History of Vaccination
Vaccination began as a traditional therapy over a thousand years ago.
S41 E14: Immunity and Vaccines Explained
Vaccines work with our immune system to keep us from getting sick.
S41 E16: Why Planes Vanish Preview
Can new technology prevent aircraft like Flight MH370 from disappearing without ...
S41 E15: Rise of the Hackers Preview
A new global geek squad is harnessing cryptography to stay a step ahead of ...
S38 E13: Is There Life on Enceladus?
Scientists discover evidence for the key ingredients for life on Saturn's moon ...
S41 E14: Stabilizing Vaccines with Silk
New technology may bypass the need to keep vaccines cold by stabilizing them ...