Résultats pour "David North" dans Science

This volume, aimed at the general audience, presents life and times of the amazing animals that inhabited Earth more than 500 million years ago. The Cambrian Period was a critical time in Earth's history. During this immense span of time nearly every modern group of animals appeared. Although life had been around for more than 2 million millennia, Cambrian rocks preserve the record of the first appearance of complex animals with eyes, protective skeletons, antennae, and complex ecologies.

From bestselling author James Raffan comes an enlightening and original story about a polar bear’s precarious existence in the changing Arctic, reminiscent of John Vaillant’s The Golden Spruce. Nanurjuk, “the bear-spirited one,” is hunting for seals on Hudson Bay, where ice never lasts...

Bestselling author David Gessner’s wilderness road trip inspired by America’s greatest conservationist, Theodore Roosevelt, is “a rallying cry in the age of climate change” (Robert Redford). “Leave it as it is,” Theodore Roosevelt announced while viewing the Grand Canyon for the...