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Genetically Modified Foods—Feed the World?
If you want to spark a heated debate at a dinner party,
bring up the topic of genetically modified foods.
For many people, the concept of genetically altered,
high-tech crop production rais all kinds of environmental,厦门免税店在哪里
health, safety and ethical questions.
chatParticularly in countries with long agrarian traditions—
and vocal green lobbies—
the idea ems against nature.
In fact, genetically modified foods are already very much a part of our lives.
A third of the corn and more than half the soybeans
and cotton grown in the US last year were the product of biotechnology, according to the Department of Agriculture.
More than 65 million acres of genetically modified crops
will be planted in the US this year.
The genetic is out of the bottle.
The issue is simple and urgent:
Do the benefits of biotech outweigh the risks?
The statistics on population growth and hunger are disturbing.
Last year the world’s population reached 6 billion.
And by 2050, the UN estimates,
it will probably near 9 billion.
[01:16.30]almost all that growth occer in developing countries.
[01:20.00]At the same time,瑜伽培训多少钱
[01:20.82]the world’s available cultivable land per person is declining. [01:25.40]The UN estimates that nearly 800 million people
[01:29.45]around the world are undernourished.
[01:31.53]The effects are devastating.沉思默想
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[01:33.40]How can biotech help?
[01:35.57]Biotechnologists have developed genetically modified rice
[01:39.73]that is fortified with beta-carotene --
[01:42.04]which the body converts into vitamin A—
[01:44.54]and additional iron,火花塞种类
[01:46.30]and they are working on other kinds of nutritionally improved crops. [01:50.78]Biotech can also improve farming productivity in places
[01:54.71]where food shortages are caud by crop damage attribution to pests, [01:59.65]drought, poor soil and crop virus, bacteria or fungi.
生于忧患死于安乐的事例[02:04.47]Damage caud by pests is incredible.
[02:07.19]The European corn borer, for example,
[02:09.71]destroys 40 million tons of the world’s corn crop annually,
