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Trophic Cascades in Rivers

In this talk, ecologist Mary Power discusses how herbivorous fish and their predators contribute to the regulation of aquatic ecosystems.

Untangling Salt Marsh Food Webs

In this talk, ecologist Brian Silliman discusses the discovery that salt marshes are controlled by the top-down forces of consumers.

Floods, Droughts, and Food Chains

In this talk, ecologist Mary Power discusses how a river's community of herbivores and predators is affected by changes in river flow.

Communities as Ecological Networks

In this talk, biologists Robert Pringle and Corina Tarnita discuss how certain connections in ecosystems can be measured experimentally and investigated using mathematical models.

The Science of Camera Traps

In this talk, biologists Alexandra Swanson and Roland Kays discuss camera traps and their use in ecological research.

Cancer as a Genetic Disease

In this talk, biomedical scientist Charles Sawyers discusses how understanding the mutations that cause cancer can guide the development of targeted drug therapies.

From Cancer Genomics to Cancer Drugs

In this talk, biomedical scientist Charles Sawyers discusses how genetic data reveal common mutations in cancer and can help uncover shared genetic mechanisms among different cancer types.