Building work uncovers a mass grave containing the bodies of the fallen in one of the bloodiest battles of the War of the Roses, the Battle of Towton of 1461 in which 28,000 men died in a single day's fighting.
A former NASA scientist tries to solve the mystery of what caused the German airship Hindenburg to go up in flames in New Jersey in 1937 and tests his theory with a laboratory experiment.
An international team of archaeologists, forensic anthropologists and botanists attempt to discover what caused the Viking colony on Greenland to mysteriously disappear.
When a palaeoanthropologist presents controversial evidence of cannibalism among the Anasazi culture Native Americans are outraged. The truth behind the evidence may be more complex than first thought.
Could an unrecorded massive explosion of the volcano Krakatoa be responsible for the cataclysmic extreme weather events of 535-536 A.D. that resembled a nuclear winter.
How the suspected extreme weather events of 535-536 A.D. brought about world wide famine, helped a plague epidemic hit Asia and Europe and indirectly influenced the fall of Ancient Rome and Arthurian England and the emergence of Islam.