It's July 17 and the temperature in the West Texas desert is marching, predictably, toward 100 degrees. But the air is cool inside the one-story prefab building where Jeff Bezos, wearing a North Face hiking shirt and a cap emblazoned with an Amazon Robotics logo, is attentive, back straight, listening. It's only Tuesday, but the week has already been eventful. His company's annual Prime Day sale proved so popular (good) that it temporarily took down the website (terrible). Amazon workers in Europe are striking.

Stephen Hawking has died at the age of 76, according to his family. Here is a look back on his life as one of the world's foremost theoretical physicists. British physician Stephen Hawking announces winners of the Stephen Hawking medals during an event held in Guia de Isora's Island, Tenerife, Canary Islands, Spain. For decades, legendary scientist Stephen Hawking was confined to a wheelchair by a form of amyotrophic lateral sclerosis, or Lou Gehrig's Disease, a neurological disease that impacts movement. He communicated via a speech synthesizer.

Professor Stephen Hawking isn't afraid to state his opinion bluntly and honestly. He has publicly expressed his fears about the future of artificial intelligence (AI), the need for a new Space Age, the serious realities of global warming, how we might reach another Solar System, and that, as a species, humans must leave Earth in order to survive. Hawking has previously stated that our time on Earth is limited to 100 years, after originally estimating 1,000 years. But, in a new announcement in a video presentation this past Sunday, November 5th at the Tencent Web Summit in Beijing, he gave the human species less than 600 years before we will need to leave Earth, according to the British newspaper The Sun. Earlier in the year, Hawking said that: "We are running out of space and the only places to go to are other worlds. It is time to explore other solar systems. Spreading out may be the only thing that saves us from ourselves. I am convinced that humans need to leave Earth."

Earth is becoming too small and humanity is bound to self-destruct, with AI replacing us as the dominant being on the planet, according to scientist Stephen Hawking. Professor Hawking says that our time on Earth is numbered after we passed the point of "no return". The theoretical physicist says that developments in AI have been so great that the machines will one day be more dominant than human beings, express.co.uk reported. He told Wired Magazine: "I fear that AI may replace humans altogether. If people design computer viruses, someone will design AI that improves and replicates itself. "This will be a new form of life that outperforms humans." Hawking, 75, said that humans need to leave Earth if we are to continue as a species. He said a new space programme should be humanity's top priority "with a view to eventually colonising suitable planets for human habitation". This will allow us to leave Earth and colonise another planet to ensure our survival, otherwise there will be "serious consequences". Professor Hawking added: "I believe we have reached the point of no return.