Space Sciences Explanation to why no calls from E.T.

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While researching how life might develop on other planets, Dr. Aditya Chopra from the Australian National University Research School of Earth Sciences and co-author Charley Lineweaver from the ANU Planetary Science Institute, realized that new life forms would have a hard time evolving fast enough to deal with runaway heating or cooling on their planets. Thus, they propose, alien life could have emerged and then perished before we had a chance to find it.
More: No signs of alien life? Maybe they're all extinct (22. January 2016)