8,240 results
8,240 results for: Fish
- Earth
When the Mercury Falls: Autumn leaves taint river with poison
Fall foliage that collects in stagnant waterways could release significant doses of a highly toxic form of mercury, which has the potential to accumulate in fish living far downstream.
- Anthropology
Evolution’s Surprise: Fossil find uproots our early ancestors
Researchers announced the discovery of a nearly complete fossil skull, along with jaw fragments and isolated teeth, from the earliest known member of the human evolutionary family, which lived in central Africa between 7 million and 6 million years ago.
- Animals
Smart tags show unexpected tuna trips
The first report on Atlantic bluefin tuna wearing electronic tags reveals much more dashing across the ocean than expected.
- Earth
A Confluence of Contaminants: Streams’ organic mix may pose environmental risk
The combined effects of at least some of several dozen organic contaminants newly identified in U.S. streams may pose risks to aquatic organisms.
- Health & Medicine
Acrylamide—From Spuds to Gingerbread
Just in time for the holiday season, the Bavarian Ministry of Health reports finding extremely high concentrations of acrylamide—a chemical that causes cancer in rats—in gingerbread. German chemists turned up acrylamide in a favorite holiday treat: gingerbread. Whether baked at home or fried at a restaurant, all hot-potato products cooked up substantial quantitites of acrylamide. […]
- Health & Medicine
Dietary Dilemmas
Low-carbohydrate diets, such as the Atkins diet, could be more effective for weight loss than low-fat diets are.
- Health & Medicine
New drugs help battle HIV
Three potential drugs in development rely on novel tactics for attacking the virus that causes AIDS.
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Live from Antarctica
Mixing live Webcasts with interactive presentations, San Francisco’s Exploratorium documents a journey to Antarctica. Team members interview scientists, dive and film underwater, climb a volcano, and visit a vast frigid desert. The Web site also features reference material on a variety of topics, including how fish adapt to icy waters, and views of the continent’s […]
- Anthropology
Cultures of Reason
East Asian and Western cultures may encourage fundamentally different reasoning styles, rather than build on universal processes often deemed necessary for thinking.
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Breathtaking Science
A small region within the brainstem creates the normal breathing rhythm.
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Mussel Muzzled: Bacterial toxin may control pest
A toxin made by bacteria could help stop the spread of zebra mussels.
- Earth
Tough Choices
Federal programs to preserve water in streams during droughts have prompted lawsuits and new pressures on endangered species and the law that protects them.
