A look ahead at the cataclysmic events that could extinguish the human race.

Throughout history certain civilisations, events and objects have fascinated and inspired us, causing those involved to dig deeper and go further on a ceaseless quest to be the first to finally uncover the truth.

An examination of the Casey Anthony case. The 22-year-old Florida woman was accused of the murder of her 2-year-old daughter, Caylee. At trial, she was convicted of four lesser charges of providing false information to a police officer, but found not guilty of murder, child abuse and manslaughter.