1,233 results
1,233 results for: Ray Fish
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Tag! You’re It
Biologists catch and tag big sawfish in Florida waters.
- Earth
Hammered Saws
Sawfish, shark relatives that almost went extinct several decades ago, have now gained protection by international treaty.
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The Next Ocean
Increasing carbon dioxide in the air is changing the pH of the ocean, which could mean very different communities of sea creatures.
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Stranded: A whale of a mystery
Scientists generally agree that sonar can trigger strandings of certain whales, but no one really knows what leads these deep divers to the beach.
- Physics
Dropping the Ball: Air pressure helps objects sink into sand
A ball plunges deeper into sand under atmospheric pressure than under a vacuum, because the presence of air allows sand to flow like a liquid.
- Humans
Letters from the November 11, 2006, issue of Science News
The Carolinas to New Jersey “Bad-News Beauties: Poison-spined fish from Asia have invaded U.S. waters” (SN: 9/9/06, p. 168) cites evidence of a severe genetic bottleneck, suggesting that perhaps no more than three pregnant females launched the expanding western Atlantic red lionfish population. How can there be “pregnant females” in an animal with the external […]
- Humans
Science News of the Year 2007
A review of important scientific achievements reported in Science News during the past year.
- Earth
Traces of Trouble
Scientists and engineers are investigating how to stem the flow of naturally-occurring and synthetic estrogens that, when released from waste water treatment plants and livestock operations, can harm aquatic life.
- Health & Medicine
Light Therapy for Tainted Fish
Shining ultraviolet light on the meal fed to farmed fish could destroy dioxins and limit the amount of those toxic chemicals that people get in the fish they eat.
- Humans
Science News of the Year 2006
A review of important scientific achievements reported in Science News during the year 2006.
- Ecosystems
Empty Nets
New research has begun challenging long-held assumptions about the consequences for fish stocks of harvesting the biggest fish first.
