NASA
Nasa: Information on the Sts 51 L Challenger Accident
The mission profile of the Challenger accident, including the sequence of events, images and movie clips, crew profiles, and the report of the Presidential Commission.
Nobel Media AB
The Nobel Prize: Michael Smith Biographical
Dr. Michael Smith (1932-2000) won the Nobel Prize for Chemistry in 1993 for his work in mutagenesis, which involved altering DNA sequences. This is his autobiography.