The fate of Amelia Earhart and her stalwart navigator Fred Noonan has been a haunting American mystery since the duo disappeared way back in 1937.
I've always had a fascination with the Titanic and how such a massive ship, believed to be indestructible, came to sink on its maiden voyage.
A team of four British engineers has completed the first stage of an ambitious project to explore an Antarcic lake.
A group of Russian and American scientsts are this week off to Siberia to evaluate evidence for the existence of the yeti - and to go and look for one themselves.
A team is to make the most detailed survey ever of the Titanic, producing a 3D map of the ship.