News
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EcosystemsBivalve Takeover: Once-benign clams boom after crab influx
European green crabs invading a California bay have triggered a population explosion of a previously marginal clam.
By Susan Milius -
AstronomyBlack Hole Bonanza: 10,000 objects near our galaxy’s center
Astronomers have found the first evidence of a suspected population of black holes near the Milky Way's center, each hole with 10 times the mass of the sun.
By David Shiga -
PaleontologyPieces of an Ancestor: African site yields new look at ancient species
Fossils unearthed at sites in eastern Africa provide a rare look at Ardipithecus ramidus, a member of the human evolutionary family that lived more than 4 million years ago.