Summary,The World Health Organization estimates that 45 million people worldwide are blind; 90 percent of them are in developing nations. Nearly half could be helped by a procedure that's become routine in many nations‚ cataract surgery. In…
Caiman crowd together at a waterfall, waiting for fish to be swept into their mouths. Caiman are one of the most successful species in the Pantanal, with more than 10 million plying the waters at any given time.