Sylvia A Earle

A Silent Spring for our era, this eloquent, urgent, fascinating book reveals how just 50 years of swift and dangerous oceanic change threatens the very existence of life on Earth. Legendary marine scientist Sylvia Earle portrays a planet teetering on the brink of irreversible environmental crisis. In recent decades we've learned more about the ocean than in all previous human history combined. But, even as our knowledge has exploded, so too has our...

Examines a variety of animals found in the sea, including jellyfish, worms, scallops, and squids.

"Biologist, botanist, and conservationist Meg Lowman--aka 'CanopyMeg'--takes us on an adventure into the 'eighth continent' of the world's treetops, along her journey as a tree scientist, and into climate action"-- Provided by publisher.

Although fewer than a half-million in number, Arctic dwellers are comprised of approximately 40 different ethnic groups. Learn how the Nenets of Russia, the Inuit of North America, and other communities survive, and how industrialization and other factors are altering traditional ways of life.

In the latitudes where most of us live, it's easy to take the sun for granted. For us, the sun comes up and goes down reliably every day, yet the poles experience six months each of continuous night and constant day. What causes the seemingly strange behavior of the sun at the poles? What causes seasons? Find out in this lecture presented by astronomy professor Edward Murphy.

What draws people to the poles again and again? What significance do these regions hold for the planet? Begin to answer these questions with Fen Montaigne, a journalist who has traveled extensively in the polar regions, as you delve into the awe-inspiring story of Ernest Shackleton's struggles in Antarctica, as well as Montaigne's own experiences.

Delve into the past, present, and future of three of the most notable islands in the Arctic and sub-Arctic: Iceland, one of the world's most geologically active areas; Greenland, which dwarfs all other Arctic islands in size; and the Svalbard archipelago, home to The Global Seed Vault.

The ice in Antarctica may be more than a mile thick and millions of years old, but at times in its history the continent has been covered with jungles. Investigate the unusual geologic processes occurring in Antarctica and discover what features may be buried under all that ice.

Meet some of the towering figures of Antarctica's "heroic era," explorers and scientists in the early 20th century who vastly expanded our knowledge of the southernmost continent. Learn what drove these adventurers despite extreme hardship, and witness the treacherous race to the South Pole between Norwegian Roald Amundsen and Brit Robert Falcon Scott.

Picture being in the Arctic when a polar bear approaches your ship. What kind of camera should you use to capture the moment? What settings should you choose? Here, National Geographic photographer Ralph Lee Hopkins explains how to navigate the unique challenges of polar photography, from dealing with a "white world" to shooting atop a moving platform.