When he was approximately fifteen, he saw a documentary about Louis Pasteur that made him interested in microscopy.
A sequel called "Life's Greatest Miracle" aired on November 20, 2001 on PBS using microimagery taken by Lennart Nilsson with narration by John Lithgow.
Harry Nilsson | Birgit Nilsson | Lisa Nilsson | Lennart Ekdal | Lennart Åberg | Inger Nilsson | Erik Nilsson | Roland Nilsson | Rob Nilsson | Nilsson Sings Newman | Isobel Lennart | Harry Nilsson's | Anna Nilsson Simkovics | Torbjörn Nilsson | Sven Nilsson | Nilsson | Nils Oskar Nilsson | Martin Nilsson | Leopoldo Torre Nilsson | Lennart Poettering | Lennart Nilsson | Lennart Jähkel | Lennart Hyland | Lennart Hansson | Lennart Ekdahl | Lennart Carleson | Lennart Augustsson | Kent Nilsson | Josefin Nilsson | Ernst Nilsson |
In 2009, he won the Lennart Nilsson Award for best scientific photography, in joint with NASA’s Cassini Imaging Director Carolyn Porco.