Planetary Evolution May be the Reason for Human Life, and Life Elsewhere
[html]A new theory suggests windows of opportunity, not a series of improbable events may have helped humans gain a foothold in the universe.[/html]
Source: Planetary Evolution May be the Reason for Human Life, and Life Elsewhere (http://ht**://www.discovermagazine.c**/the-sciences/planetary-evolution-may-be-the-reason-for-human-life-and-life-elsewhere)