I wonder why

Includes index

Why is there life on earth? -- How can a star keep us warm -- What is the weather? -- Which blanket keeps Earth warm? -- How is the atmosphere like a greenhouse? -- What are the greenhouse gases? -- Why are trees like the bee's knees? -- How does water cycle? -- Why can't we chop 'til we drop? -- What makes gas? -- Why is farming such a gas? -- What's that smell? -- Is it me, or is it hot here? -- Will this blow me away? -- Has our climate always changed? -- Are we up to our necks in floods? -- What's wrong with car parks? -- Who turned the rain off? -- Why are the poles hot stuff? -- Why is ice so cool? -- When is a river not a river? -- Why is there a hole in the sky? -- Is the hole in the sky always there? -- How can water be bad for you? -- When is oil like glue? -- Can air make you choke? -- Why are some animals on the move? -- Who needs a place to call home? -- Who is the tiger's worst enemy? -- What energy never runs out? -- How can the sun light up our nights? -- How is wind farmed? -- Why say 'bye to flying? -- What are food miles? -- Why all the fuss about taking a bus? -- Why is garbage such a waste? -- What are the three Rs? -- When is a worm my friend? -- How can I have a green house? -- When is "off" not "off"? -- Why are some lightbulbs greedy? -- How else can I save energy? -- Index

Presents facts about the Earth and the need to respect our environment

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