Cold War-era floppy disks for nuclear management finally retired, 1970s NASA revelations of life on Mars revealed, possibly ancient bear skull unearthed.

Woolly mammoths' last days before extinction uncovered, jelly-like orb captured on video underwater, "Bronze Age New York" unearthed.

D-Day audio brought to light, hidden Renaissance masterpiece found, Pompeii scrolls virtually unraveled.

Dinosaur fossil kept secret finally revealed, Machu Picchu's secrets unraveled, grim details of Incan child sacrifices uncovered.

King Tut's outer coffin removed from his tomb for the first time ever, face of humankind's Denisovan ancestors reconstructed, Bronze Age sword unearthed.

"Spanish Stonehenge" revealed by drought, remains of Russian city sacked by Mongols uncovered, Civil War cannonballs found washed up on beach.

Hitler relative arrested for pedophilia, secrets of Dead Sea Scrolls unlocked, teenager's Holocaust diary to be published.

Remains of history's largest child sacrifice uncovered, tale of accused witch who killed herself resurfaced, first space crime in history investigated.

In an era before producers established censorship guidelines, anything went in Hollywood, including films starring hyper-sexualized toddlers pretending to be prostitutes, drunks, and disparaged veterans.

Shipwreck of infamous cannibal voyage investigated, ancient inscription alluding to biblical war found, Aaron Burr's secret family of color uncovered.

Cleopatra's perfume discovered, hidden da Vinci sketch found under iconic painting, Soviet message in a bottle washes ashore after 50 years.