Phil Keoghan journeys to the Atacama Desert to visit Paranal Observatory. Mariana van Zeller heads to California to speak with members of the growing Flat Earth movement, and a group of volunteers trying to debunk their claims. Albert Lin explores a new frontier in human's ambition to travel to Mars - hibernation - and how lemurs can help. Cara Santa Maria explores the world of meteorite trading in Morocco and what it means for space research.
When these exotic pets become too much for their owners they wreak havoc on Florida's wildlife and even attack us.
This giant reptile has survived unchanged for 100 million years. Science reveals its surprising intelligence and what happens when man encroaches on its territory.
Everyone knows the power of the great white shark but there is so much more to learn about this perfect and ancient predator.
To the untrained eye, they're gelatinous blobs, driftingaimlessly on the ocean's currents. But jellyfish are amongthe most-feared and least-understood creatures on earth.And their populations are exploding across the world.
World's Most Dangerous Gang: Power of Fear+
You've spotted the graffiti. You've seen their tattoos. And you've read the shocking headlines documenting their brutality. But what is driving the rapid spread of the ultraviolent gang MS-13, which has infected big cities and small towns across the country? National Geographic Channel's EXPLORER takes you deep inside a merciless world hidden in plain view - the shadowy culture of MS-13.
Surviving Maximum Security: Back Inside+
In 2005, Lisa Ling once gave viewers a rare look inside a level 4, maximum security prison. Now, shes going back to see how things may have changed.
In the maximum-security prison world of murderers and rapists, they are the most feared. With nicknames like "The Beast" and "The Hulk", the warriors of The Aryan Brotherhood are the most violent criminals behind bars men who strangle with their bare hands, shank guards, gouge out their enemies eyes at the slightest sign of disrespect. Forged in prison out of race wars against black gangs, prison officials tried to scatter the Brotherhood across the country but that only spreads their power nationwide. Today, their reach extends far beyond the windowless cells of maximum security from which they run a highly organised trafficking enterprise dealing...