Book excerpt: Sharks are in trouble. Fifty shark species are at high risk of extinction, and another sixty-three are threatened. Discover the work of scientists and conservationists as they study shark biology and morphology; research migration, feeding, and mating patterns; delve into human, climate, and other threats to shark habitat; and develop sophisticated technologies to aid sharks and shark research. See how scientists also educate the public about real and imagined fear of sharks and encourage citizen participation in shark conservation efforts. You can even adopt a shark