In this talk, ecologist Robert Pringle discusses two important questions in ecology: “How do we conserve ecosystems?” and “To what state should we try to restore damaged ecosystems?”

In this talk, marine biologist Stephen Palumbi compares threats to biodiversity in the ocean to threats on land.

In this talk, marine biologist Stephen Palumbi discusses how coral reefs are threatened by climate change and how to protect them.

In this talk, biologist Anthony Barnosky discusses what steps can be taken to avoid a sixth mass extinction.

In this discussion session, biologists Stephen Palumbi, Anthony Barnosky, and Elizabeth Hadly answer questions from students.