"Marine biologist Brent Hughes discovered a surprising connection between sea otters and sea grass at an estuary in northern California. Follow science in action as Hughes conducts the research that led to this major discovery."--

Describes the nature of the sun, its origin, source of energy, layers, atmosphere, sunspots, and activity.

Celebrates the forms of life that live above and under a pond, including turtles, red-winged blackbirds, blue herons, minnows, frogs, and catfish.

"A wetland is an area where the land is covered by water for some or all of the year. Wetlands are important because they clean water as it moves through them." --

"This enchanting and informative picture book explores the vital connections between the layers of an ecosystem, relating how every tree, flower, plant, and animal connect to one another in spiraling circles of life."--

"Part science, part carnival--this winding adventure down the Amazon River with award-winning author Sy Montgomery and photographer Keith Ellenbogen explores how tiny fish, called piabas, can help preserve not only the rainforest and it's often misunderstood inhabitants, but the fate of our entire environment."--

Learn about animals that inhabit the Okefenokee Swamp.

Introduces the world of nests, revealing the variety created by the world's birds, animals, and insects.

"Discover the magical depths of the kelp forest, and all the fascinating creatures living just a paddle's length away-both over and under the waves."--

Award-winning science writer Seymour Simon explores the Red Planet through fascinating facts and amazing full-color photographs. Readers will learn about the recent discovery of water, the Valles Marineris-the biggest valley on Mars-the ice caps, recent expeditions, and more. This updated edition includes: author's note stunning full-color photographs glossary index websites and additional reading sources Supports the Common Core Learning Standards,...