"Who Created Piltdown Man-Science's Most Notorious Fraud? For 40 years, a fossil skull discovered in Piltdown, England, was hailed as the missing link between apes and humans. Then, in 1953, new scientific tests revealed the shocking truth-"Piltdown Man" was a fake! But who could have perpetrated the hoax? Was it the amateur archaeologist, Charles Dawson, who dug up most of the bones? Or the eminent museum curator, Sir Arthur Smith Woodward of Britain's...

Istanbul's magnificent Hagia Sophia has survived on one of the world's most active seismic faults, which has inflicted a dozen devastating earthquakes since Hagia Sophia was built in 537 AD. As Istanbul braces for the next big quake, a team of architects and engineers is investigating Hagia Sophia's seismic secrets. NOVA follows the team's discoveries as they examine the building's unique structure and other ingenious design strategies that have insured...