In this talk, ecologist Robert Pringle discusses how patterns and processes that occur in the savanna, a globally important biome, illustrate core concepts in ecology.

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, biologist Anthony Barnosky discusses Earth’s five mass extinctions and whether current species declines may be part of a sixth mass extinction.

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

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.