منابع مشابه
Should selecting saviour siblings be banned?
By using tissue typing in conjunction with preimplantation genetic diagnosis doctors are able to pick a human embryo for implantation which, if all goes well, will become a "saviour sibling", a brother or sister capable of donating life-saving tissue to an existing child. This paper addresses the question of whether this form of selection should be banned and concludes that it should not. Three...
متن کاملCalls to curb deep-ocean trawling
Scientists have called for subsidies paid out to a handful of national deep-sea fishing fleets to be stopped immediately in yet another plea to prevent permanent ecological damage and the extinction of some of the longest living creatures on the planet. Without the $150 million of subsidies paid annually, deep-sea fisheries would operate at a loss of $50 million, researchers believe. But the te...
متن کاملShould DDT be banned by international treaty?
The insecticide DDT has been an effective and affordable means of malaria control in many countries, but pressure for its use to be banned is mounting. Here, Chris Curtis and Jo Lines take a critical look at evidence that links house spraying by DDT with harm to the environment and human health, and stress the need for resources for alternatives to DDT to be made available to countries that wou...
متن کاملSystemic vascular resistance should be banned.
In an article published in a recent issue of CHEST (June 2014), Marik 1 mentioned, “In patients with septic shock who are fl uid responders (an increase in cardiac output with fl uid boluses), vasodilatation with a fall in systematic vascular resistance has been observed.... Hence, although the cardiac output increases, vasodilatation occurs.” I believe that this statement is erroneous because ...
متن کاملImpact of Bottom Trawling on Deep-Sea Sediment Properties along the Flanks of a Submarine Canyon
The offshore displacement of commercial bottom trawling has raised concerns about the impact of this destructive fishing practice on the deep seafloor, which is in general characterized by lower resilience than shallow water regions. This study focuses on the flanks of La Fonera (or Palamós) submarine canyon in the Northwestern Mediterranean, where an intensive bottom trawl fishery has been act...
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ژورنال
عنوان ژورنال: Nature
سال: 2013
ISSN: 0028-0836,1476-4687
DOI: 10.1038/501007a