Reading The Colors of the Spectrum
Did you ever wonder how scientists can tell us so much about distant stars, for example, the surface temperature or chemical makeup of a star, light years away from Earth? Scientists can only use what the star sends our way -- its radiation, and specifically…
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Biology
Sex and the Sea Slug
The sea slug, Aplysia. Now there's an expert on sex. Equipped with both male and female sex organs, this…
Geology
Igneous Rocks, Born of Fire
Rocks are naturally occurring solid mixtures of substances primarily made of minerals. There are three kinds…
Biology
Endangered Species - The Hawksbill Turtle
The hawksbill turtle's status has not changed since it was listed as endangered in 1970. It is a solitary…
Biology
Why Are Zebra Mussels Successful As Invaders?
The zebra mussel (Dreissena polymorpha) is a small, non-native mussel originally found in Russia. In 1988,…