Stephen Hawking : Questioning the universe

Stephen Hawking at TED2008
Questioning the universe  (transcript)
Summary
Stephen Hawking who was a very famous cosmologist and theoretical physicist died on March 14, 2018.
He left us many words that we must not forget.
In this TED talk, he tells us that we who live on the Earth are the only civilization within hundred light years though civilizations don't last very long. They destroy themselves.

He explained about the universe politely by answering three questions.
1) Where did we come from?
2) Are we alone in the universe?
3) What is the future of the human race?

The universe can spontaneously create itself out of nothing. Now, in the universe, we must be only life. There is a possibility of other lives appearing though it'll take over ten billion years. We have made remarkable progress though it's too selfish to protect the Earth.

It'll be difficult enough to avoid disaster in the next hundred years. Our technical young man ability changes the environment for good but ill also.

Words in this story
abduction /noun/ kidnapping, taking captive, carrying away
salutary /adj/  beneficial, advantageous, good, profitable
suppress /verb/ seize, calm
extrapolate /verb/ guess