Scientists say intelligent life on other planets is 'exceptionally rare'

In a new paper, Oxford researchers theorise that for life to have evolved the same way somewhere else, it would have taken longer than the whole of Earth's projected lifespan. https://www.dailymail.co.uk/sciencetech/article-9000797/Scientists-say-intelligent-life-planets-exceptionally-rare.html?ns_mchannel=rss&ns_campaign=1490&ito=1490