RNA-interference pesticides will need special safety testing

Standard toxicity testing is inadequate to assess the safety of a new technology with potential for creating pesticides and genetically modifying crops, according to a Forum article published in the August issue of BioScience. ...

Whales' foraging strategies revealed by new technology

Marine biologists are beginning to understand the varied diving and foraging strategies of filter-feeding whales by analyzing data from multisensor tags attached to the animals with suction cups. Such tags, in combination ...

North American freshwater fishes race to extinction

North American freshwater fishes are going extinct at an alarming rate compared with other species, according to an article in the September issue of BioScience. The rate of extinctions increased noticeably after 1950, although ...

Researchers map fish species at risk from dams

Dams are believed to be one of the biggest threats to freshwater organisms worldwide: They disrupt normal patterns of water and sediment flow, impede migration, and alter the character of spawning and feeding grounds. A shortage ...

Long-term studies detect effects of disappearing snow and ice

Ecosystems are changing worldwide as a result of shrinking sea ice, snow, and glaciers, especially in high-latitude regions where water is frozen for at least a month each year—the cryosphere. Scientists have already ...

Solar power development in US Southwest could threaten wildlife

Government agencies are considering scores of applications to develop utility-scale solar power installations in the desert Southwest of the United States, but too little is known to judge their likely effects on wildlife, ...

Oysters disappearing worldwide: study

A survey of oyster habitats around the world has found that the succulent mollusks are disappearing fast and 85 percent of their reefs have been lost due to disease and over-harvesting.

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