To save nature, we must protect 30 percent of U.S. ocean

  Long before she alerted the world to the danger of the pesticide DDT, marine biologist Rachel Carson wrote in her book, The Sea Around Us, “It is a curious situation that the sea, from which life first arose, should now be threatened by the activities of one form of that life. But the sea, though changed in a sinister way, will continue to exist; the threat is rather to life itself.” Today, in the face of a mass extinction of the plants, animals, and microorganisms that keep our air clean, our water pure, and our food supplies plentiful, her words ring even truer. The planet has lost 60 percent of its wildlife since 1970. Two-thirds of wetlands have disappeared, and nearly 33 percent of reef-forming corals and more than a third of marine mammals are threatened with extinction. Three-quarters of the planet’s lands and two-thirds of its ocean areas have been significantly altered by human activities. All this is happening while climate change is making the ocean hotter, more acidic, and less habitable for fish and wildlife.