Chemical pollution will bring about a threat to agriculture and food chain, and consequently to human health.

化学污染将威胁农业和食物链，进而危害人类健康。

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In the early 1940s, basking in the glory of chemical-based intensive agriculture, the farmers avidly took to pesticides as a sure measure to boost crop yield.

在20世纪40年代早期，农民们沐浴在以化学品为基础的集约农业的光辉下，贪心地把杀虫剂当作增加作物产量的一种可靠方法。

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But advocates of conventional agriculture argue that organic farming simply can't provide enough food because the yields tend to be lower than those for crops grown with chemical fertilizer.

但传统农业的倡导者辩称有机农业无法提供足够的食物，因为其产量低于用化学原料养大的庄稼。

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Founded in 2001 by a pair of Stanford grads, Blue River Technology is using that money to develop an alternative to chemical-intensive agriculture, which is both labor intensive (even with all that spraying fields still need to be weeded) and environmentally toxic.

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Agriculture and chemical companies like DuPont , Dow Chemical and BASF are all ridding themselves of their drug divisions.

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Likewise, although Dow Chemical and DuPont have strong agriculture divisions, companies specializing in agrochemicals and biotech crops increasingly stand alone: look at Monsanto and Syngenta , both of which were spun off from pharmaceuticals firms.

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