Table of Contents June 1992

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Discover Magazine's mission is to enable readers to lead richer lives by explaining and expanding their universe.  Each month we bring you in depth information and analysis from various topics ranging from technology and space to the living world we live in.
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FEATURES

If you were a slug and could choose your own sex, which would you pick? Are you sure?
Sex among our closest relatives is a rather open affair.
The onset of puberty may be an individual decision.

We didn't know, so we asked the experts.

When it comes to describing fertilization, biologists have got it all wrong. The egg is no passive lady-in-waiting.
Though dumb, ugly, and uncoordinated, sperm manage to get the job done.
To their own horror and that of their parents, some babies born with male genes end up with female parts.
Are orgasms function or fun? Inquiring biologists want to know.
Sex seems like an unnecessarily complicated means of reproducing. So how did it ever get started? And why did it catch on?

DATA

After an accident, a woman looks to find a cure for her manic depression.

The globular clusters are only a few hundred million years old.

See how the International Astronomical Union names newly discovered celestial objects.

Scientist are finding proof that prairie dogs have different alarm cries for different predators.

Allen Dong has completed half a dozen designs for farmers in the poorest areas of the world.

The June solstice marks the start of summer and the longest day of the year.

We can’t understand the origins of human sexual expression without knowing more about how we actually behave.

The new organelle is three times as large as a ribosome and may be just as important for the cell’s functioning. 

It is believed that there are half a dozen full-size asteroids whose orbits place them squarely in the stream of Earth.

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