Are We Alone? Setting Some Limits to our Planet's Uniqueness

Are humans unique and alone in the vast universe? This question -- summed up in the famous Drake equation -- has for a half-century been one of the most intractable and uncertain in science. But a new article shows that the recent discoveries of exoplanets combined with a broader approach to the question makes it possible to assign a new empirically valid probability to whether any other advanced technological civilizations have ever existed.

Read the full story at Science Daily