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5 December 2013 11:26 am ,
Vol. 342 ,
An animal rights group known as the Nonhuman Rights Project filed lawsuits in three New York courts this week in an...
Researchers have been hot on the trail of the elusive Denisovans, a type of ancient human known only by their DNA and...
Thousands of scientists in the Russian Academy of Sciences (RAS) are about to lose their jobs as a result of the...
Dyslexia, a learning disability that hinders reading, hasn't been associated with deficits in vision, hearing, or...
Exotic, elusive, and dangerous, snakes have fascinated humankind for millennia. They can be hard to find, yet their...
Researchers have sequenced and analyzed the first two snake genomes, which represent two evolutionary extremes. The...
Snake venoms are remarkably complex mixtures that can stun or kill prey within minutes. But more and more researchers...
At age 30, Dutch biologist Freek Vonk has built up a respectable career as a snake scientist. But in his home country,...
- 5 December 2013 11:26 am , Vol. 342 , #6163
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Engineered Crops Won't Feed World, New Report Says
14 April 2009 4:24 pm
Proponents and critics of genetic engineering in agriculture usually agree on one thing: The technology is powerful, whether for good or ill. Today, the Union of Concerned Scientists broke ranks and asserted that genetic engineering is simply ineffective, at least in increasing crop yields.
UCS's Doug Gurian-Sherman searched the scientific literature for side-by-side comparisons of conventional and genetically engineered lines of corn and soybeans. He found that in almost all cases, genetically engineered crops did not produce larger harvests. The one exception was insect-resistant Bt corn, which produced higher yields only when neighboring plots of conventional corn suffered infestations of a worm called the European corn borer. Crop yields have increased significantly over the past decade, he says, but almost all of that increase was due to traditional plant breeding or other agricultural practices.
These results won't surprise most farmers. They plant crops that have been genetically modified to tolerate doses of the herbicide glyphosate (widely known as Roundup) mainly because that trait makes it easier and sometimes cheaper to control weeds, not because it increases yields. The UCS study is instead aimed at the general public, in an effort to counter claims by the biotechnology industry that genetic engineering offers the best solution to global food shortages.