Ancient Farmers of the Amazon

This video segment from Evolution: "Evolutionary Arms Race" tells the story of the leafcutter ant and the fungus it farms -- an example of mutually beneficial symbiosis.

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Biodegradation

In this media-rich lesson featuring LOOP SCOOPS videos, students learn about the biodegradation timeline for various biotic and abiotic materials in products, and consider the disposal options that would help reduce waste and pollution.

Capturing Carbon: Where Do We Put It?

In this interactive activity from NOVA scienceNOW, explore options for storing carbon dioxide in order to prevent further global warming.

Carbon Cycle Diagram

This diagram from NASA's Earth Science Enterprise illustrates the Earth's carbon cycle .

Careers in Environmental Health

This interactive activity produced for Teachers’ Domain examines some of the career opportunities available in the environmental public health field and describes how the work of professionals in this field directly impacts human health.

Chemist and Biologist Catherine Drennan

In this video produced for Teachers' Domain, learn about MIT professor Cathy Drennan's research into microorganisms that remove carbon dioxide, a greenhouse gas, from the atmosphere.

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Chris Schneider: Rethinking Conservation

In this interview filmed for Evolution: "Darwin's Dangerous Idea," biologist Chris Schneider discusses the relationship between conservation and speciation.

Complex Relations

In this text excerpted from chapter 3, "Struggle for Existence," of Charles Darwin's On the Origin of Species, Darwin draws on firsthand and historical information for his observations about evolution.

Contaminants in the Arctic Human Population

In this video segment adapted from LOKE Films and the Arctic Monitoring and Assessment Programme, learn how human populations in the Arctic are affected by industrial contaminants in the food chain.

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Coral Reef Connections

Dive in and explore what makes this beautiful world so fragile. In this Evolution Web feature, discover how coevolution has shaped the ecological relationships among reef creatures.

Dating Lava Flows on Mauna Loa Volcano, Hawaiʻi

In this video segment adapted from NOVA, scientists search for carbonized remains of plants preserved in lava flows to find out how long it has taken rain forests on Hawaiʻi to regenerate after a volcanic eruption.

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Deep Sea Vents and Life's Origins

Deep-sea vents are home to strange, luminescent life forms that thrive through chemosynthesis. This video segment from NOVA: "Volcanoes of the Deep" hypothesizes life's beginnings in this extreme environment.

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Electronic Gadgets

Two kids learn some surprising facts about the parts in their computer game, in this animated video from LOOP SCOOPS.

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Energy Flow in the Coral Reef Ecosystem

This video segment, adapted from NOVA, describes the energy flow in a coral reef, including its food web.

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Ethanol Biofuel

In this video segment adapted from NOVA, learn about one scientist's idea for using biotechnology to make ethanol a more efficient alternative to gasoline.

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Factory Farms and Organic Alternatives

In this video adapted from the series Race to Save the Planet, learn how agricultural pesticides can help increase the amount of food produced, but can also damage soil and wildlife in the process. See how organic farming addresses some of these challenges.

Global Warming?

Students examine the issue of global warming. They calculate how much carbon dioxide all the machines they use produce in one day.

Global Warming and the Greenhouse Effect

This video segment from Race to Save the Planet: "Only One Atmosphere" discusses the greenhouse effect and global warming.

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How Did Life Emerge Here?

This video segment adapted from NOVA describes the emergence of life on the islands of Hawaiʻi from a barren volcanic platform under the ocean waves to the rich explosion of life that covers the many climate zones of the islands today.

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Illuminating Photosynthesis

This interactive feature from the NOVA: "Methuselah Tree" Web site details the process of photosynthesis and its role in the oxygen/carbon dioxide cycle.