Investigators, oil workers and residents of the American Gulf Coast reveal the cascading problems and deadly mistakes that led to the worst marine oil spill of all time.

Newly uncovered records reveal why the seemingly reliable plane was headed toward disaster and what could have been done to prevent it.

Using new research, first-hand accounts and unpublished CIA files, to uncover the signs, clues and missteps that led to a Presidential assassination that rocked the world.

In-depth analysis and key interviews reveal the ten biggest factors that led to the Twin Towers disaster on September 11, 2001.