Full Episodes | 130See All
Examine the science behind vaccinations and the risks of opting out.
Dive teams, submersibles, and robots explore a massive underwater WWII archeological site.
A crack team rebuilds a glider that POWs hoped to catapult off the top of Colditz Castle.
Will analyzing the hunting instincts of this endangered predator reduce deadly attacks?
Can we return apex predators to their natural environments without endangering humans?
Master craftsmen explore how Florence’s monumental dome was built nearly 600 years ago.
Who or what killed hundreds of people hidden in a burial chamber nearly 2,000 years ago?
Bronze age bog bodies reveal the strange beliefs of the long-vanished peoples of Europe.
Clips | 134See All
Dr. Richard Pan explains California's strategy for increasing vaccination rates.
Urban archaeologists dig for stories beneath city streets.
Vaccination began as a traditional therapy over a thousand years ago.
Vaccines work with our immune system to keep us from getting sick.
The polio vaccine's history extends more than fifty years.
Comets carrying chemicals necessary for life may have come to Earth billions of years ago.
NASA’s Kepler mission lets us search for planets orbiting stars outside our solar system.
Scientists discover evidence for the key ingredients for life on Saturn's moon Enceladus.
Previews | 116See All
Experts recreate the French’s daring first manned flights, which Franklin had chronicled.
How did fighter planes evolve from rickety biplanes to deadly machines during WWI?
Airs Wednesday, September 3, 2014 at 9:00 p.m. ET/PT. Check your local listings.
A new global geek squad is harnessing cryptography to stay a step ahead of cybercriminals.
Can new technology prevent aircraft like Flight MH370 from disappearing without a trace?
Airs Wednesday, August 27, 2014 at 9:00 p.m. ET/PT. Check your local listings.
Airs Wednesday, August 20, 2014 at 9:00 p.m. ET/PT. Check your local listings.
After a massive extinction, diverse marsupials came to dominate this isolated continent.
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