http://www.huffingtonpost.com/science
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Humans have been searching for signs of life on other planets at least since the 1960s, when scientists began scanning the heavens for radio signals that might be evidence of extraterrestrial beings. Scientists even have tried to reach out to aliens by sending out radio messages, beginning with transmissions made in 1974.
But does it make sense for us to try to establish contact with alien life? A new HuffPost/YouGov poll shows that many Americans have their doubts.
It's not that Americans don't think intelligent life exists beyond Earth. Fifty percent think intelligent life is out there somewhere, the poll shows. Nineteen percent think there's no intelligent alien life, and 31 percent say they're not sure.
And 46 percent think it would be possible for humans to contact intelligent aliens. But only 37 percent think it's a good idea to try. Twenty-seven percent said it's a bad idea, while 36 percent aren't sure whether it's a good or bad ide
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