Just finished – Stephen Hawking – A life in Science

This is the biography of Professor Stephen Hawking,
A quick intro about this remarkable human being:
“Stephen Hawking is considered the world's foremost living theoretical physicist. He is an expert on black holes, whose stated intention is to unify quantum mechanics with Einstein's general theory of relativity, forming a single theory to explain the origin (and end) of the universe. Hawking, a professor of mathematics at Cambridge University, is the author of the best-selling book A Brief History of Time and something of a celebrity: he has made guest appearances on the TV shows Star Trek and The Simpsons. Hawking has suffered from ALS (amyotrophic lateral sclerosis, also called Lou Gehrig's disease) since he was a young man and is confined to a wheelchair.”
Prof. Hawking is not only confined to a wheel chair but cannot speak…he communicates through an artificial voice synthesizer using his two fingers, one of the few responsive parts in his body.
The biography is fascinating, essaying the intense self-determination of the professor against his ill-fated destiny.
This man has travelled across the world in his wheel chair, delivering some of the most cutting-edge discoveries on the origins of the universe through his lectures, despite the illness diagnosed by a doctor when he was in his college.
Doctors, at that time, had pronounced that the young man wouldn’t see more than two summers…but now the professor has crossed his sixties and still carries his mission with an higher level of enthusiasm than ordinary folks like us.
What are we going to do for our planet?

P.S: I am reading Galileo, the biography of Galileo Galilee, the 16th century scientist, mathematician, artist, philosopher who pronounced that earth revolves around the sun with evidence and was prosecuted by the holy church for committing this ‘secondary sin’.