1. Shark attack Photograph by Bill Curtsinger Sleek and swift, gray reef sharks cruise past a remote-control camera in the waters of the Bikini Atoll. Photographer Bill Curtsinger knew better than to get in the water for the picture: An aggressive gray attacked him years ago, leaving him scarred but wiser. 2. Golden lions Photograph by Mitsuaki Iwago A golden lioness and her cub bask in the warmth of a savanna sun in Tanzania’s Serengeti National Park. 3. Macaw Flight Photograph by Frans Lanting On rainbow wings almost three feet (one meter) across, a fledgling scarlet macaw in the Peruvian Amazon rides the wind for the first time. Of the world’s 350 parrot species 17 are macaws—marked by their long tails and huge beaks. 4. Indus Civilization Photograph by Randy Olson In Pakistan’s Indus Valley a group of hunters still practice a 5,000-year-old method of catching waterfowl. Hunters tie pet herons to a hoop in the river, then drop to their necks in the water wearing masks made from real...