Sir David Frederick Attenborough is a naturalist and broadcaster, who is most well-known for writing and presenting the nine "Life" series, produced in conjunction with BBC's Natural History Unit. The series includes Life on Earth (1979), The Living Planet (1984), The Trials of Life (1990), Life in the Freezer (about Antarctica; 1993), The Private Life of Plants (1995), The Life of Birds (1998), The Life of Mammals (2002), Life in the Undergrowth (2005) and Life in Cold Blood (2008).He is the younger brother of director and actor Richard Attenborough.Photo credit: Wildscreen's photograph of David Attenborough at ARKive's launch in Bristol, England © May 2003