Discover more about plants and how to identify their different parts.

		Plant Morphology Evidence and Analysis for grades 6 through 12 From leaf margin and arrangement to the parts of a flower and a corn seedling, take an illustrated look at plant morphology with this collection of guides.
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		Dichotomous Key for Conifers Evidence and Analysis for grades 6 through 12 Like all dichotomous keys, this one for conifers, fittingly looks like a series of branches. Gather a twig that has the tree’s cones or fruits on it. Then branch out and identify your conifer.
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Discover more about how new techniques and technology affect farming and the environment.

		Tips for Identifying Poison Ivy Article for grades 6 through 12 Did you know that the first time you come in contact with poison ivy, you probably won't get a rash? Every time after that, though, is a different story. Learn how to spot different varieties.
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Discover more about how scientists classify animals and explore various forms of animal adaptations.

		The Big Chill: Calming Signals Among Wolves Article for grades 6 through 12 Wolves have long been the favorite animal of this eighth-grader from Illinois. Learn how she turned her interest into an insightful experiment about how wolves calm and comfort each other.
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		Spiders: We'd Probably All Be Dead Without Them Article for grades 6 through 12 Think you'd prefer a world without spiders? Think again! Without these terrestrial predators, humans would probably starve within a matter of months. Find out why spiders are your friends.
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		Fish Skull Animation: Jaw Protrusion Evidence and Analysis for grades 9 through 12 Did you know that the sling-jawed wrasse can extend its jaw up to 65 percent in order to capture its prey? Take an animated look at the first animals to develop bony jaws.
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		Dichotomous Key for Conifers Evidence and Analysis for grades 6 through 12 Like all dichotomous keys, this one for conifers, fittingly looks like a series of branches. Gather a twig that has the tree’s cones or fruits on it. Then branch out and identify your conifer.
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		Diversity of Fishes: Bloch Illustrations Evidence and Analysis for all grades up to 12 A surgeon by training, Marcus Elieser Bloch became a student of fish by chance. Yet, more than two centuries later, his work is still world renowned. See why with these 34 hand-colored illustrations.
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Discover more about ecosystems, food chains and webs, and the cycles of life.

		Exploring a Woodlot's Ecosystem Article for grades 6 through 12 Chances are you've heard the saying "There's no such thing as a free lunch." But did you know that it's one of fundamental laws of ecology? Explore all four with this tenth-grader from Wisconsin.
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		Tipping the Scale: The Delicate Balance Between Microbes and Men Article for grades 6 through 12 Why are infectious agents spreading and diversifying at an alarming pace? Because of the way we're altering our atmosphere, oceans, and land. Learn how to tip the scale back into balance.
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		Florida's Fragile Reefs: What's Happening to this Underwater World? Article for grades 6 through 12 Investigate reefs in the Florida Keys to see how and why they are dying not just there, but all over the world. Then learn what can be done to save these "rain forests of the sea."
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		Video Gallery: Fishes and Water Article for grades 9 through 12 You can find fish from the highest mountain streams to the very depths of the ocean. In fact, of all the groups of animals alive on the planet, fish inhabit the widest bandwidth.
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		How Do Humans and Plants Interact in Tidal Wetlands? Article for grades 6 through 12 How is cordgrass able to survive the high salinity of a marsh when other plants can't? An amazing adaptation that lets it secrete excess salt, as this ninth-grader from Virginia discovered.
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		Video Gallery: Life at the Deep Sea Vents Evidence and Analysis for all grades up to 12 Descend nearly two kilometers below the Pacific's surface to a place devoid of sunlight—but not life. See the crabs, fishes, and worms that live near the sulfide chimneys at the Juan de Fuca Ridge.
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Discover more about populations, ecosystems, and how they change over time.

		Florida's Fragile Reefs: What's Happening to this Underwater World? Article for grades 6 through 12 Investigate reefs in the Florida Keys to see how and why they are dying not just there, but all over the world. Then learn what can be done to save these "rain forests of the sea."
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		No More Chocolate? How the Rain Forest and a Tiny Fly Make Chocolate Happen Article for grades 6 through 12 For more than 3,000 years, people have enjoyed the flavor of chocolate. Yet we may soon face a global shortfall. Learn why this easy-to-consume substance has become a lot harder to cultivate.
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		Fiddler on the Marsh Article for grades 6 through 12 Fiddler crabs never stray far from their burrow. That's why they will do anything to avoid getting caught and measured, as this ninth-grader from Virginia found out.
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		Can Tropical Fish Survive in a Lake in Southwestern Montana? Article for grades 6 through 12 How did tropical fish end up in Montana's Trudau Lake? And do they go dormant to survive the winter? This eighth-grader's winning essay investigates and answers these questions and more.
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		Online Field Journal: Dioramas Activity for grades Kindergarten through 5 Now you can gaze at your favorite museum diorama anytime you want, night or day. Grab your crayons, and create a shoe-box replica of A Wading Bird Rookery, The Olympic Rain Forest, or A Giant Cactus Forest.
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		Going to Gabon: Why Do Fish Matter? Article for grades 6 through 12 Why should we be concerned about the fish that live in the rain forest rivers of Gabon, Africa? For starters, these fish are an early warning system, signaling threats to the water and environment.
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		Lyme on the Loose: What's Inside This Tick? Article for grades 6 through 12 It seems that many humans agree with ticks when it comes to one thing: the ideal place to live. Learn more about how we've been helping to create the perfect conditions for a Lyme disease epidemic.
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		Video Gallery: Conserving Diversity of Fishes Article for grades 6 through 12 Lake Victoria in Africa was once home to hundreds of unique species of fish. Why is this lake dying right before our eyes? And what would its loss mean to world?
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		Video Gallery: Man Bites Shark Article for grades 9 through 12 Why should sharks be afraid of people? And why should we be concerned about a habitat when we see its shark population decline? Travel with the Mote Marine Lab for a closer look at sharks.
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