Stephen Hawking quiz: How much do you know about scientist Stephen Hawking, his life and his theories? source: http://www.bbc.co.uk/news/stories-43403335 via #PCH3lp by:
Original Post: http://www.bbc.co.uk/news/stories-43403335
Original Post: http://www.bbc.co.uk/news/stories-43403335
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