One of the greatest minds and authors of the 20th Century just died. Arthur C. Clarke was very well known for some of his highly acclaimed books (think about 2001: A Space Odyssey and the collaboration with Stanley Kubrik on the movie with the same name). Some of them were only known to Science Fiction fans (Rendez-vous with Rama, The Fountains of Paradise, for example).
But Sir Arthur C. Clarke was also the author of significant steps for science like the observation that geostationary satellites would be the practical solution to many telecommunication issues. I can vividly remember my reading of Interplanetary Flight; an introduction to astronautics, where in 1950 he stated very clearly concepts like the multi-stage rocket or the geostationary satellite and why they should be prefered to other technical solutions.
The old man (born on 16 December 1917) was living in Sri Lanka where he appreciated the leisure of all-year-long scuba diving.
Science Fiction can no longer be the same after he left us.
Arthur C. Clarke died at the age of 90 from respiratory complications linked to the post-polio syndrome that forced him into a wheelchair for his last years.