Chain reactions

Traces the history of modern astronomy and examines some of its important concepts.

Examines where light comes from and how it is used along with information on leading scientists in the field.

Explores transplant surgery, discussing its history; various types of transplants, including liver, heart, and face; and how donor organs are found.

Explains the story of chemical reactions from gunpowder to laser chemistry, and profiles leading scientists in the field of chemistry.

Explains the history and development of medicines from ancient herbal remedies to modern vaccines.

Explains the history and development of genetic engineering and the genetic modification of food.

Examines cloning, discussing its history, benefits, and ethical issues it raises.

Examines the history and development of genetic fingerprinting and how scientists are using this knowledge in various fields including crime prevention and medicine.