Following two passionate archaeologists, Giuseppe Orefici and Egle Barone-Visigalli, this documentary tries to solve the enigma of a little-known Pre-Columbian civilization: the Nasca.
Hidden deep beneth the Earth's surface lie one of the most destructive and yet least under-stood natural phenomena in the World. Super Volcanoes. One of the largest Super volcanoes is in Yellowstone National Park in the USA.
1947, a British civilian version of the wartime Lancaster bomber took off from Buenos Aires airport on a scheduled flight to Santiago, but never made it. Instead it vanished when it was apparently just a few minutes from touchdown.
Horizon examines supermassive black holes and the recent discovery that they are crucial to the formation of galaxies. Supermassive black holes were originally hypothesized to explain active galaxies and quasars, but later were discovered to be at the center of many ordinary galaxies including our own.