منابع مشابه
Going, going, gone
The decline and loss of species is inevitable in the face of growing human pressures on the environment but, according to one group of senior researchers, a standard framework is needed to assess the rate of this decline if researchers wish to be effective and policymakers are to take note.
متن کاملMitochondrial Evolution: Going, Going, Gone
Monocercomonoides is the first example of a eukaryote lacking even the most reduced form of a mitochondrion-related organelle. This has important implications for cellular processes and our understanding of reductive mitochondrial evolution across the eukaryotic tree of life.
متن کاملGoing, Going, Gone: Is Animal Migration Disappearing
Essay A nimal migration surely ranks as one of nature's most visible and widespread phenomena. Every minute of every day, somewhere, some place, animals are on the move. The migrants span the animal kingdom, from whales and warblers to dragonflies and salamanders. But is migration an endangered phenomenon? Around the world, many of the most spectacular migrations have either disappeared due to ...
متن کاملMeasles: going, going, but not gone.
For those of us engaged in disease investigation and response at the state and local level, the report by Chen and colleagues [1] in this issue of the Journal makes for sobering reading. It describes an outbreak of measles in Arizona where virus transmission predominantly occurred in the health care setting, a scenario of great concern to us all. In reading through the report, I was repeatedly ...
متن کاملGrey matters
It is partly by research on the sensory capabilities of other organisms that we realise just how visual humans are. We have abandoned many of the senses other species possess. We can't smell our way up a pheromone-laden path, detect magnetic fields or electrical potentials, our brains contain no compasses by which we can navigate vast distances. The masses of nerve cells required for these skil...
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ژورنال
عنوان ژورنال: D-Lib Magazine
سال: 2009
ISSN: 1082-9873
DOI: 10.1045/march2009-powell