"It's ridiculous to think that because you didn't find a significant increase in brain cancer among kids that now cell phones are safe," added Davis.

“因为未发现儿童脑癌几率大幅上升而断言手机使用是安全的，这很荒谬。”戴维斯又说。

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At the University of California at Davis, Dr.Isaac Pessah is researching the impact of the environment on brain development and autism.

VOA: standard.2010.08.09

Mr. NORM MATLOFF (University of California at Davis): What we have here is an internal brain drain.

NPR: Critics: High-Tech Visas Cheat U.S. Workers