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Wednesday, June 21, 2017

Stephen Hawking Says Earth Is Under Threat and Humans Need to Leave

Newsweek

Newsweek Europe3 hrs ago

Sen. Richard Burr, R-N.C., right, chairman of the Senate Select Committee on Intelligence, and Vice Chairman Mark Warner, D-Va., left, listen as Attorney General Jeff Sessions testifies about his role in the firing of FBI Director James Comey and the investigation into contacts between Trump campaign associates and Russia. The committee heard testimony Wednesday on Russian efforts to meddle in the 2016 election.

Russians potentially tried to hack vote systems in 21 U.S. states: official

© Provided by IBT Media (UK) Stephen Hawking sits onstage during an announc… Stephen Hawking has warned that Earth is under threat and repeated his belief that humans must leave in the next few centuries if we are to survive as a species.
“The Earth is under threat from so many areas that it is difficult for me to be positive. The threats are too big and too numerous,” he said, according to the Evening Express. “Our physical resources are being drained, at an alarming rate. We have given our planet the disastrous gift of climate change. Rising temperatures, reduction of the polar ice caps, deforestation, and decimation of animal species. We can be an ignorant, unthinking lot.”
Hawking made the comments as part of his keynote address at the Starmus Festival in Norway. The festival celebrates science and music, and aims to help the public get a better understanding of complex science.
The professor has made similar dire warnings about the fate of mankind in the past, but in his latest comments, he addressed several specific issues he feels are the biggest threat and talked about how we might become a multi-planetary species.
Hawking said that in the past, when humans have faced “similar crises” in terms of resources, they moved to new parts of the world: “Columbus did it in 1492 when he discovered the New World,” he said. “But now there is no new world. No Utopia around the corner.
“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,” he said.
The Milky Way is home to an estimated 100 billion planets. Of these, millions, if not billions, are “potentially habitable,” meaning they could have the conditions right to host life, including a stable climate and that allows liquid water to exist.
Hawking noted there are an estimated 1,000 stars within 30 light years of Earth, so if just 1 percent of these were Earth-like, we would have 10 candidate planets to move to. H also said he believes humans will have developed the technology for interstellar travel within the next 200 to 500 years.
“Human colonization on other planets is no longer science fiction. It can be science fact,” he said. “The human race has existed as a separate species for about two million years. Civilization began about 10,000 ago, and the rate of development has been steadily increasing. If humanity is to continue for another million years, our future lies in boldly going where no one else has gone before.”