منابع مشابه
Worries heighten Antarctic focus
Antarctica is coming under an increasing global focus. Not only is evidence growing of its potential worldwide impact on climate change, but it is also showing evidence of some of the fastest climate changes itself. And its ecosystems, which comprise some remarkable species, are turning out to be increasingly complex and fragile. It is perhaps no surprise that researchers and, more controversia...
متن کاملBee fears heighten
a group of animals under such a high level of threat is, quite frankly, unlike anything we have recorded among any other group of species to date. " Elsewhere, species from tiny mouse lemurs to massive mountain gorillas face challenges to survive in Africa. Eleven out of the thirteen kinds of red colobus monkey assessed were listed as critically endangered or endangered. Two species may already...
متن کاملIsland worries
additional risk, he says, comes from the very property that regenerative medicine wants replacement organs to possess, namely invisibility to the immune system. " Tissues derived from iPSC may share with ES cells the potential to display immune privilege which may provide a 'safe haven' in which rare transformed cells may develop into tumours or viral pathogens may flourish under the radar of t...
متن کاملDiversity worries
But the giant weta from New Zealand holds the record as the heaviest insect. As a flightless insect, it has put on the bulk. A female measuring just 80 mm long has been recorded at 71 grammes. In perspective, most beetles at this length probably weigh 5 grammes and birds of this size would probably weigh 12 grammes. And, of course, the colonial insects break records. Jones notes that leafcutter...
متن کاملWinter worries
spend the next nine months without making landfall. And it is becoming increasingly clear that very little is known about the birds during this time. As they breed only above 50 degrees latitude, they are considered cold-water birds, but researchers working with puffins breeding at England's largest colony on the Farne Islands are concerned about their winter environment as there has recently b...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2008
ISSN: 0960-9822
DOI: 10.1016/j.cub.2008.02.040