A new theory has stargazers thinking maybe we haven't found signs of extra-terrestrial life yet because we're going about it the wrong way.
Right now, a scientific project known as the Search for Extraterrestrial Intelligence (SETI) is leading the way in the search for life beyond Earth.
Their method is to scan outer space for radio transmissions, new or old. They've been doing it for 50 years, and so far, it hasn't really worked out.
Physicists interviewed in the Economist say that's not necessarily because there are no aliens. But maybe aliens just don't use radio technology, they propose
To read the rest of the article, click here.