What Are You Wondering About?
Turbulent Earth
How does Earth maintain its speed of rotation? Why doesn't it slow down?
How was Earth formed, and what was it like in the beginning?
Does air weigh anything?
Why do trees and other plants take in carbon dioxide, while we take in oxygen?
What makes a volcano erupt?
Why don't we have ice ages anymore?
If you dug all the way through Earth, would you end up in space?
What causes quicksand?
Why do some mountain ranges look blue if they are covered with green forests?
How come there are deserts?
How do lakes form?
If the rivers drain into the oceans, why don't the oceans fill up and overflow?
How do islands form?
How do icebergs form?
What are the jet streams, and what causes them?
What causes the different shapes of clouds?
Why are rain clouds black in color? What happens to clouds after they form?
What causes the sound of thunder?
Why does a rainbow always form an arch?
What makes dew appear on grass?
What is the cause of fog?
Why do jet airplanes leave trails in the sky that look like clouds?
Why does the sky turn colors at sunset?
How is Earth like a magnet?
Is it true draining water swirls in opposite directions north and south of the equator?
Why do ships and planes disappear in the Bermuda Triangle?
Why do we seem to see a face in the Moon?
Why does Earth have only one moon?
How come Earth doesn't have any rings?
Where does dust come from?
Safari
How do fish breathe underwater?
How come fish and dolphins don't sleep?
Why do some sharks die if they stop swimming?
If whales can't walk, why do they have hips?
Do whales really sing?
Why are electric eels electrical?
How does a chameleon change its color?
How can a hummingbird fly both forward and backward?
How do birds know where south is?
Why are butterfly wings so colorful?
How come moths eat wool?
Where do bugs go in cold weather, reappearing like magic when it warms up?
How many eyes does a fly have?
How do you get lice, and how do you get rid of them?
Why do elephants have such big ears?
How can camels survive with little or no water?
Why does a porcupine have quills? How do they work?
Why do raccoons have black masks?
Do flying squirrels really exist?
How do cows digest their food?
Why do dogs bark?
How do cats purr?
Why do cats' eyes shine in the dark?
How do animals communicate without language?
How come so many animals have tails (and we don't)?
How did dinosaurs get their long and difficult names?
Why do animals become extinct?
Bodyworks
Why do fingers get wrinkled after soaking in water for a long time?
Why do people get goose bumps?
Why do we get bruises? And why are they black and blue?
How does blood stop flowing out of a cut?
What makes your nose bleed?
How does hair grow?
Why does hair mostly grow on our heads?
Why do men seem to lose their hair more often than women do?
Why do we get pimples?
What causes warts?
What causes freckles?
Why does the sun make our skin darker, but our hair lighter?
Why and how do we get fevers?
Why do our ears pop when we fly on a plane or drive in the mountains?
Why do people sneeze?
What makes us allergic to things?
What causes an itch, and how come it feels better when you scratch it?
How does the nose smell things?
How come chopping onions makes you cry?
What gives foods their different tastes?
Why do our faces flush, eyes water, and noses fun when we eat hot, spicy food?
What is cholesterol?
Why is cigarette smoking bad for the lungs?
How does alcohol affect the body?
Why does our breath smell bad, especially in the morning?
Why do people burp?
What makes your stomach growl?
How come acids in the stomach don't destroy it?
Do we really need an appendix?
Where do our voices come from?
Why do people snore?
Why do we need sleep?
Why do people sleepwalk?
What causes headaches?
How do muscles work, and how do you build muscles?
How does the heart work?
What is high blood pressure?
Why do we run out of breath when we run?
How does sweating work?
Where does the fat go when you lose weight?
What is the difference between identical and fraternal twins?
What makes our eyes the color they are?
Why do we giggle when we hear jokes?
Why do we sometimes feel that what we're experiencing has happened before?
Factory Field Trip
How is chewing gum made?
How is chocolate made?
How is decaffeinated coffee made?
Why does rubber bounce?
How is glass made? How is it shaped into drinking glasses and pop bottles?
What is perfume made of? And where do they come up with the fragrance names?
How are diamonds formed?
How do gems form and how do they get their color?
How is silk made?
How does detergent get clothes clean?
How does a refrigerator work?
How does a microwave oven cook food?
How does a radio work?
How does a compact disc play music?
How does a mercury thermometer work?
How does hot air lift a balloon?
How do jet airplanes fly?
How is paper made?
How does glue work?
How does a magnifying glass work?
How does camera film record pictures?
How do electric lightbulbs emit light?
How does a telephone work?
How were mummies made?
Index
Special Thanks