Search Results for: Fish
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8,309 results for: Fish
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SpaceLong the stuff of fantasy, wormholes may be coming soon to a telescope near you
For decades now, black holes have been the rock stars of popular astrophysics, both fact and fiction. Physicists rely on them to explain all sorts of mysterious astrophenomena, and black holes have been essential plot devices in various films, from Star Trek (2009) to Galaxy Quest (1999) to (obviously) The Black Hole (1979). But black […]
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Gray Matters
Once believed to be a supporting cast, the brain cells called astrocytes appear to play important roles in many brain scenarios.
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EcosystemsUnderwater Refuge
Efforts are under way to greatly expand coastal no-fishing zones.
By Janet Raloff -
PaleontologyThe Latest Pisces of an Evolutionary Puzzle
The recent discovery of coelacanths off the northeastern coast of South Africa was the first sighting of the rare fish in that country since the first living coelacanth, a type of fish thought to have been extinct for millions of years, was caught there in late 1938.
By Sid Perkins -
EarthBig Bergs Ahoy!
Although the break-up of Antarctica's northernmost ice shelves has been linked to warmer temperatures in the area, the cause of the unusual number of large icebergs calving from the continent's southern ice shelves last year was likely not global warming.
By Sid Perkins -
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Telltale Heart
Genetics is revealing the first steps in building a heart—the organ that is first to develop, subject to the most birth defects, and difficult to heal when damaged later in life.
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Alarming Butterflies and Go-Getter Fish
Recent studies suggest that there may be more ways to create new species than Darwin imagined.
By Susan Milius -
Health & MedicineAncient Estrogen
A jawless fish ancestor may have revealed the most ancient of hormones and how current hormones evolved from it.
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EcosystemsWanted: Reef Cleaners
Nearly 18 years after a near total die-off of algae-grazing urchins in the Caribbean, those herbivores are poised for a comeback—which could help save area corals.
By Janet Raloff