- When should humans leave Earth?
- Why does Stephen Hawking want us to leave Earth?
- Why do we stay on Earth?
- What is Stephen Hawking convinced of?
- Will humans go extinct?
- What does Stephen Hawking say is the only chance of long term survival for humans?
- What is the future of humanity?
- Can humans live on Venus?
- Will humans live on Mars?
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Why Humanity Should Leave Earth