He’s quick. He’s silent. He has five rows of deadly teeth. Chomp! Meet the shark—the fish who ruled the deep before dinosaurs roamed the Earth! This fish has soft cartilage so he can glide, twist, and turn before his prey can say "gulp!" He can smell a single drop of blood in 25 million drops of ocean. He can feel electricity given off by his prey. He will lose and replace more than 10,000 teeth in his lifetime. Cool photos bring kids into the shark’s world. Fun facts go deep into the shark’s scary science.

The cool story of volcanoes will intrigue kids and adults alike. Hot melted rock from the middle of our planet forces its way up through cracks in the Earth’s crusts, exploding violently and sometimes unexpectedly in volcanic fury that can terrorize populations for months, even years. Anne Schreiber’s narrative gives readers a little of the science, a little of the history, and a lot of the action. National Geographic photography fires the imagination on dramatic spreads alive with vivid images of lava, ash, molten rock, weird rocks, and steaming seawater.