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AgricultureSoy-protein quality versus quantity
New tests show that as the protein yields of soybeans rise, the growth-enhancing quality of that protein as a food or feed decreases.
By Janet Raloff -
AnthropologyPeople fired up Aussie extinctions
Early Australian settlers may have altered the continent's landscape around 50,000 years ago, leading to the extinction of many animal species.
By Bruce Bower -
AstronomyCore mystery
Despite new images from the Hubble Space Telescope, the brightest known supernova of the past 400 years remains a puzzle for astronomers.
By Ron Cowen -
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I have some problems with this article. The section regarding alpine thistles seems to ignore the huge moisture-collecting effect of aboveground matter, such as dead plant remains, that results from condensation of dew.