男友太凶猛1v1高h,大地资源在线资源免费观看 ,人妻少妇精品视频二区,极度sm残忍bdsm变态

Make me your Homepage
left corner left corner
China Daily Website

Science has bigger say in GM food

Updated: 2013-10-29 07:18
By Shenggen Fan ( China Daily)

Whether genetically modified foods can help eradicate food insecurity and poverty has been the subject of contentious and polarizing debate.

Science has bigger say in GM food

The backdrop to this debate is a global agricultural system that is facing increasing challenges from rising climatic variability, population growth, urbanization, and natural resource depletion. According to the Food and Agriculture Organization, food production needs to increase by 60 percent by 2050 in order to feed 9 billion plus people. Scientists and policymakers alike are searching for innovative ways to ensure sufficient access to nutritious food, today and for generations to come. Unlike previous science-based initiatives to raise productivity in the agricultural sector (such as the Green Revolution), the potential of GM crops to combat food security and poverty challenges is muddled in hotly contested discussions.

The considerable expansion of GM crop varieties worldwide over the last two decades is indisputable. The total area devoted to GM crops has increased 100-fold from 1.7 million hectares in 1996 to 170 million hectares in 2012. Developing countries now grow more GM crops than developed countries (in terms of area), largely driven by Brazil's recent fast-paced adoption of GM crops. China is home to approximately 4 percent of the total global area devoted to GM crops. Soybeans, maize, cotton, and canola dominate GM crops globally, whereas China's focus is on cotton, papaya, and poplar.

To date, a wide body of (peer-reviewed) scientific impact studies shows that commercially-available GM crops are safe for people and the environment. According to a 2010 review of the safety of GM crops by the European Union, "the main conclusion to be drawn from the efforts of more than 130 research projects, covering a period of more than 25 years of research, and involving more than 500 independent research groups, is that biotechnology, and in particular GMOs, are not per se more risky than, for example, conventional plant breeding technologies." Other international and national scientific bodies, such as the World Health Organization, have reached the same conclusion.

The documented impacts of GM crops point to many productivity, environmental, and socio-economic benefits among large- and small-scale farmers alike. Genetic engineering can boost yields by developing plant varieties that have increased resistance to stresses such as disease, pests, and droughts, lower fertilizer and water application, and higher nutritional quality.

Previous Page 1 2 Next Page

 
8.03K
 
...
主站蜘蛛池模板: 永德县| 都昌县| 绵阳市| 佛山市| 思茅市| 台北市| 射阳县| 虎林市| 伊吾县| 马龙县| 井研县| 美姑县| 株洲市| 团风县| 绥德县| 玉溪市| 共和县| 正宁县| 宁安市| 灌南县| 芜湖市| 三门县| 天门市| 蒲江县| 遂溪县| 博客| 错那县| 鹤山市| 保康县| 玉树县| 万州区| 德安县| 阿城市| 祁门县| 永昌县| 紫金县| 临泽县| 蒙城县| 缙云县| 厦门市| 石台县|