Now some scientists are trying to help quolls, and maybe other species, by teaching them that cane toads are not food and should be avoided.

现在，一些科学家想办法帮助这些小袋鼬，或许还有其它类似的物种，方法就是教会它们树蛙是不能吃的，应当躲开。

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Now, some scientists are worried that such a famine could happen again, but on a much wider scale.

现在，一些科学家担心这样的饥荒可能会再次发生，但规模会大得多。

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Now, some scientists have come up with some different ideas.

现在，一些科学家提出了一些不同的想法。

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Some scientists now believe that tension headaches may result from changes among brain chemicals such as serotonin.

VOA: special.2010.03.30

Now some scientists are giving radium, radon and other toxins a second look.

FORBES: Magazine Article

Until now, some scientists have thought that many individuals of the same species with certain talents could perform specific tasks better than the same number of individuals from different species.

ECONOMIST: Marine biodiversity

These were very large compared to what is happening now, but nonetheless some scientists, myself included, are worried that the North Atlantic could be quite sensitive to the smaller amounts of freshening that are occurring now.

NPR: Arctic Freshwater Pouring Into Atlantic, Scientists Say