By Joshua Rapp Learn, Contributing Reporter
AMAZONIA - The heat is overpowering by mid-afternoon, but as the brown waters swirl against the hull of a creaking river ferry, a slight breeze is enough to bring peace to swaying hammocks and blow away the mosquitoes. In fact, going downriver it is sometimes easy to forget you are on a river at all, for even as far north as Letícia the river is nearly 2km wide.
The Amazon was named after the . . .