id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
expositions-1772	none	An Introduction to Big History	2014	22	.pdf	application/pdf	11148	762	70	Helium had virtually no interest in other atoms. It is a wholly other set of problems to stay together for many years to raise children, a problem that hominids did have to figure out if they were to survive.	cache/expositions-1772.pdf	txt/expositions-1772.txt