How will mankind survive a hundred more years?

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Stephen Hawkin, the newton-einstien of this decade, has published a video clip of his speech about the survival of mankind. He points out that the dangers of nuclear armament and escalation, climate change, and genetically engineered viruses are more immediate threats. Dr. Hawking also realizes that humankind has a far better chance of survival if discussions of possible solutions spur a desire to take action.

It is only available in audio/video format click here , but I have taken the duty of transcribing it.