https://www.cnbc.com/2018/03/15/stephen-hawking-predictions-human-extinction-to-global-warming.html >Stephen Hawking was well-known for his work on black holes and the theory of relativity. But, the famous physicist, who passed away on Wednesday at the age of 76, also had some predictions about the future, ranging from topics such as aliens to the end of the world. >Here are some of his most famous predictions.