Sylvia Earle has done something no one else has — walked solo on the bottom of the sea, under a quarter mile of water. She tells what she saw — and what she has learned — about the giant, living system that is the ocean. And, she explains why seeing a shark is a sign for hope.
Smithsonian magazine features stunning images of jaguars in Brazil’s Pantal wetlands.
This NatGeo map may surprise you.