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Index
Coverpage
Titlepage
Copyright
Contents
Introduction
Nature and the Earth
Why does the sun shine?
Why are plants green?
Why are there 365 days in a year?
Why does water freeze?
Why do tides ebb and flow?
Why do things burn?
Why does iron rust?
Why do trees drop their leaves?
Why do plants flower in the spring?
Why did the dinosaurs die out?
Why are we running out of oil?
Why does radioactive material have a half-life?
Why does the earth quake?
Why is the world getting warmer?
Why do volcanoes erupt?
Why is the sea salty?
Why is the ground solid?
Why does it rain?
The Human Body and Mind
Why can’t we hear dog whistles?
Why is blood red?
Why do we get old?
Why do we feel pain?
Why do we sleep?
Why do we have 46 chromosomes?
Why do we have X and Y chromosomes?
Why can’t we breathe underwater?
Why can’t we eat grass?
Why do we dream?
Why do we forget?
Why can’t we fly?
Why are men bigger than women?
Why can’t we photosynthesize?
Why do men go bald?
Why do men have nipples?
Why are babies and puppies considered universally cute?
Physics and Space
Why does E=mc
Why do some objects float?
Why do apples fall down?
Why are there so many planets in our solar system?
Why is the universe expanding?
Why does the sea appear blue?
Why does the wind blow?
Why is the earth round?
Why is there a dark side of the moon?
Why does time only move forward?
Why do lightbulbs light up?
Why split the atom?
Why is the sky blue?
Why does ice float?
Why does iron stick to a magnet?
Why can’t we travel faster than light?
Why is there no life on Mars?
Why is the moon the same apparent size as the sun?
Why does my cell phone lose its signal?
Appendix
Selected References
Bibliography
Sample Chapter from The How-To Handbook
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