Explores how many of the living things on Earth are still to be found and described, looks at the things that affect biodiversity, and what our world might look like in years to come.

Includes index and glossary.

Biodiversity -- Case study : census of marine life -- Winners and losers -- Population pressure -- A change in the weather -- Water, water everywhere -- Polluted world -- In the wrong place at the wrong time -- Saving habitats -- Case study : frogs in danger -- Saving species -- What can I do? -- Clues from the past -- Mass extinctions : who's next? -- Brave new world -- The end of the world -- Earth's threatened species.