Risky Business

TOM STOCKILL for TIME

Christopher Lewis's farm has been attacked seven times by ecowarriors

Linda was ecstatic last summer when she learned that she was pregnant again. But the 39-year-old mother of two was also worried, since the chances of giving birth to a baby with Down's syndrome increase dramatically with age. So at 12 weeks, Linda, who lives in London, decided to have the full battery of tests that determine the risk of Down's. An ultrasound scan measured the fluid within the neck of the fetus — the more fluid, the higher the risk — while a blood test tracked hormone levels crucial to fetal development. All the results came back normal...

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