id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
iguana-17694	Bonner, Jeffrey P.	What Do We Lose If We Lose the Frogs?	2007	3	.pdf	application/pdf	1339	66	72	Last year, 14 of these substances, taken from just a handful of different frog species, were tested in a lab; three of the 14 showed a remarkable capacity to completely inhibit HIV infec- tions. In the next five to ten years, about half of the different kinds of animals that make up the Class known as amphibians probably will become extinct.	cache/iguana-17694.pdf	txt/iguana-17694.txt