Volunteers removed enough plastic from the shore of a lake in Brazil's Amazon to fill a dumpster, but scientists warned that the problem goes far beyond the debris that can be picked up by hand. At the same lake near Manaus, researchers detected microplastics in the digestive tracts of half the jaraqui they examined, according to Mongabay. What happened? Because jaraqui is eaten so widely in Amazonas state, the finding has heightened concern. F…