Is Mars habitable? A critical examination of Professor Percival Lowell's book 'Mars and its canals,' with an alternative explanation by Alfred Russel Wallace

Alfred Russel Wallace (8 January 1823 – 7 November 1913) was a British naturalist, explorer, geographer, anthropologist, and biologist. He is best known for independently conceiving the theory of evolution through natural selection; his paper on the subject was jointly published with some of Charles Darwin's writings in 1858.