Are we alone in the universe? / 
Marcus Chown. 
 - Singapore:  BBC Studios UK Publishing,  2022. 
 - pp. 44 - 53. 
 - BBC Earth: Your Productive Brain.  No. 13.  Vol. 14, .
<br/><br/> The search for alien life is ramping up. But what if, instead of searching for signs of biology, we looked for something more familiar: an extraterrestrial civilisation. 
<br/><br/><label>ISSN: </label>2737-5560 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>BBC Earth Ar31 2022