id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
expositions-1773	none	We Are Stardust … Concentrated by Earth!	2014	15	.pdf	application/pdf	6781	238	60	In this essay, to convey the flavor of Earth history and its relevance to humanity, let me pick up on a point made strongly and correctly by Christian, Brown, and Benjamin—that almost all of the chemical elements important to humans were made in stars. ade all of th as allowed u bilities of th Toth and Ka ge Institute makers and u an Acheulea 5 and half a mans to star y. Stone tool es who were oncentrated by e part of the works of art ing abilities his possible s humans, w e animals w athy Shick, p at Indiana users of ston an hand axe a million yea rt eating ene ls gave us th interested in y Earth! tool makers t as well as p increased to is that some with our blun ith the sharp paleoanthrop University, ne tools, and e, for examp ars ago.	cache/expositions-1773.pdf	txt/expositions-1773.txt