News
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EcosystemsA Chronicle of Coasts: Study charts historical changes in seas, estuaries
New research compares the long-term ecological impact of human activities in estuaries and coastal seas on three continents.
By Ben Harder -
AnimalsFishy Reputations: Undersea watchers choose helpers that do good jobs
Coral reef fish use smart-shopper techniques of looking for satisfied customers before choosing a small fish to provide cleaning services.
By Susan Milius -
Health & MedicineProof of Protection: Condoms limit infection by cervical cancer virus
Condom use reduces a woman's risk of being infected with human papillomavirus and of developing precancerous growths on the cervix.
By Nathan Seppa -
AstronomyMagnetic Thrust: Fields force matter into black holes
New observations confirm that magnetic fields provide matter with the last push to plunge into a black hole.