Includes index.

Extinction is forever -- What is extinction? -- Extinction and evolution -- Why does it happen? -- How do we know? -- Not quite extinct -- Beliefs and ideas -- Long, long ago -- Mass extinctions -- The biggest of all -- Ages of ice -- Keeping a record -- Gathering pace -- Too many to disappear -- Island extinctions -- What's happening today? -- On the brink -- Saved just in time -- Should we care? -- Gone forever? -- Looking to the future.