Origins of biodiversity -- Biodiversity and us -- Life's long and chequered career -- Evolution's atlas -- What is a species? -- Genes, genes, genes -- Ecology: function -- The web of nature -- What has biodiversity ever done for us? -- Valued landscapes -- Nature in the city -- Life in freshwater -- Fate: threats and solutions -- Going, going, gone: the sixth extinction -- The exhaustible sea -- Climate change -- Invasion planet Earth -- What next for nature?.