id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
crln-8517	Eberhart, George M.	New Publications	2011	2	.pdf	application/pdf	1246	47	56	A perfect companion to this literary his- tory is Trailblazing Mars: Davies evaluates the past 50 years of SETI (Search for Extraterrestrial Intelligence) projects and calls for a major rethink of the strategy proposed by Frank Drake in 1960— looking for discrete alien signals—by shifting to a search for general footprints of ETI.	cache/crln-8517.pdf	txt/crln-8517.txt