News
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MathOrbiting in a figure-eight loop
Three gravitationally interacting bodies of equal mass can, according to precise calculations, trace out a figure-eight-shape orbit in space.
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Fading to black doesn’t empower fish
Field studies of three-spined stickleback fish dash a textbook example of the theory of how one species can take on a competitor's characteristics.
By Susan Milius -
Hey, we’re richer than we thought!
The latest inventory of life in the United States has turned up an extra 100,000 species of plants, animals, and fungi.
By Susan Milius -
EarthTitanic iceberg sets sail from Antarctica
An iceberg about the size of Connecticut recently split off from the Ross Ice Shelf in Antarctica.