Flight MH370 vanished without a trace but with plenty of theories. One is the strong possibility a cargo of lithium-ion batteries, known to spontaneously combust and burn at high temperatures, could have brought the plane down.

Modern aircraft are tracked by multiple systems in flight. Transponders connect with radar, and ACARS transmits signals between ground stations and satellites. In MH370, both were turned off; experts believe a person had to do it.

This sneak peek of Science Channel's new series, starts with Malaysian Airlines Flight 370 which disappeared without a trace in March, 2014.

A hacker who worked his way into critical routing, fuel and other avionics over 20 times via in-flight entertainment, believes a smart hijacker could have used the same tactic to re-route Flight MH370 to a top secret location.

Something spooked nine experienced hikers out of their tent on snowy night to their deaths. Missing clothes, shoes and some bodies horribly disfigured, an expert with their last writings finds nothing pointing to trouble.

Two Atlantis hunters use a computer program that analyzes the 51 clues provided by Plato's writing to objectively target a location for the that vanished in a day.

60 years ago, scientists discovered evidence of an eruption 3,000 years ago that wiped out an entire city? Could this be evidence of Atlantis?

Scientists struggle to find a cause for terrifying rogue waves that can happen even on a clear day.

For many years people told tales of seeing an ancient ship deep in the desert of California. Could this petroglyph provide proof it existed?

Dangerous riptides force even Olympic swimmers to turn back; could convicts have survived?

Scientists study winds and tides to see if anyone could make it to shore.

Legends tell of an Incan city in Peru called Paititi where they hid their gold. El Dorado hunters believe they’ve found a clue to lead them to the city – from an unusual place.

A new method of surveying using laser pulses reveals so much about surface areas, it has been likened to the discovery of the internet for archaeologists.

Archaeologists arrive at a spot deep in the Honduran jungle that lidar indicates was once inhabited. What they find is amazing – is this El Dorado?

A stone found in 1937 is carved with a story of the lost colonists of Roanoke. Future stones prove to be fake, but experts believe the first has features unique to the 1500’s.

The word Croatan is carved into a post on the Roanoake site; it’s the name of a Native American tribe and an island now called Hatteras. In a deep drought the colonists may have sheltered there.