Follow Torsten Hoffmann on a three-year investigation into the new space pioneers, who are risking it all to turn science fiction into science fact.

In Ethiopia, Dr. Samuel Bora, the only ophthalmologist for three million people, performs up to 60 cataract surgeries daily, restoring sight and hope.

Chernobyl's reactor explosion was history's worst nuclear disaster. Hear details of what led to the catastrophe, and track the chaos and panic.

Harold Shipman, a murderous doctor, is among history’s most prolific killers, with 250 known. Explore his psychology and his long evasion of justice.

Watch history come to life. Witness the heart-stopping moments when astronauts face jeopardy and meet the scientists who rescued them.

Professional photographers Jason Isley and Roger Munns race to photograph deadly sharks for a new book, while avoiding the wild, fearsome predators.

Boeing's 747, born from financial strain and as a backup to the Super-Sonic Transport, became an engineering icon that revolutionized air travel.

Families and doctors reveal a 50-year cover-up in diabetes care, exposing harmful guidelines and share new hope for managing and preventing issues.

Follow Torsten Hoffmann on a three-year investigation into the new space pioneers, who are risking it all to turn science fiction into science fact.