From a 2,400-year-old corpse in remarkable condition to how shrunken heads are made, these 15 ancient secrets will have you completely riveted. The Vesuvius eruption may have been a gradual process. It took a storm to lift the cover on this ancient Roman city. The people of Pompeii often resorted to vigilante justice. How the wealthy of Pompeii protected their valuables? Was this pre-Viking gathering a prelude to a massacre? The valuable commodity behind King Solomon's wealth. This valuable Viking grave is missing something important. Is this where humanity decided to settle down? This mysterious stone structure is older than Stonehenge. This 2,400 year old corpse is in remarkable condition. Here's exactly how shrunken heads are made. DNA analysis reveals troubling news about shrunken heads. This mass grave discovery could alter Roman history. Gladiator teeth reveal signs of infant malnourishment. Evidence suggests Stonehenge was an elite cemetery.

(Click CC for subtitles) Hector Berrellez's informants give him ground breaking evidence - first-hand, eyewitness accounts of Kiki's kidnapping, torture, and murder. He learns the incident took place in a cartel hacienda where high-level Mexican government officials were present, along with a mysterious Cuban. They also reveal the cartel and governments attempts to cover up the crime.

A Winning Design clarifies what makes a mammal different from reptiles and birds. No, it isn't egg-laying: both the platypus and the echidna are egg-laying mammals; it's their ability to adapt. And it's this adaptability that becomes the crux of the remainder of the series. From the tiniest bat to the massive blue whale, all mammals share the ability to nurture their young on milk and regulate their own temperatures.

Odds are excellent that extraterrestrial life exists. So why haven’t we found aliens out in the galaxy? Are we looking in the wrong places? New research shows we should look closer to home, even inside our bodies. It turns out that a lot of our DNA is from a mysterious, nonhuman source. Theoretically, alien microbial life can make the journey to Earth from distant worlds, and scientists are finding some unearthly microbes in our upper atmosphere. Could it be from outer space? Could we be part alien? It’s even possible alien life is already here as digital life forms, hiding inside our technology.

Without the chemistry of photosynthesis, ozone, and a molecule called Rubisco, none of us would be here. So how did we get so lucky? To find out, host David Pogue investigates the surprising molecules that allowed life on Earth to begin, and ultimately thrive. Along the way, he finds out what we’re all made of—literally.

Death is life's greatest certainty. But that may be about to change. Scientists have discovered an immortal animal that may hold the secret of endless regeneration. They're on the brink of editing our DNA so that we can cure ageing like a disease. Or is dying necessary for the survival of our species?