A Formica ant suspends a drop of aphid honeydew between her mandibles (which bristle with 7 or more teeth), as she drinks it. Photo courtesy of Alex Wild, copyright, used with permission.WonderQuest:  On the web since 1997...      

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1. Ceiling fan - way to rotate

2. Average size US woman

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4. Can eye color change?

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Petroglyphs from Bushmen of South Africa illustrating an early hunt with dogs. Picture used with permission from Pietermaritzberg: University of Natal Press.

Did humans and dogs become domesticated together?

There’s conjecture of how man and man’s best friend have influenced each other’s development

Here's your next question:


Why do birds sitting on a power line all face the same direction?

Deadline is 1 July. We will publish the best answers on 12 July.

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Why cows have four stomachs

Why do cows have four stomachs? Lisa, Gervais, Oregon 

Cows evolved four stomach compartments so they can grab grass and be ready to run if a predator attacks. Later, when life is safer, they can regurgitate the grass from the first compartment, and digest it at leisure, chewing their cud. The several compartments also allow cows to glean nourishment from food otherwise not easily digested.

Further Reading

Digestive system of cattle, Virginia State University

(Answered Feb. 4, 2008)

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