Earlier I posted about the bibliomulas, mules that are used to deliver books to folks in the remote mountain regions of Venezuela.  To help point out what a difference just one book can make check out this talk at the TED conference with a Malawian man, now 19, who at the age of 14 read a book on windmill energy at the library and used it to figure out how to build a windmill to supply enough electricity for four light bulbs and two radios for his home.