Article: Dragonfly abnormalities discovered; Cause isn't yet known; toxins are suspected.(NEWS)

1/3 Two researchers have found deformities in dozens of dragonflies studied last summer in northern Minnesota, mostly at sites along the Rainy and Upper Mississippi rivers.

Environmental scientists and state officials said it's too early to say what caused the deformities. There also seems to be little to no correlation to frog deformities found elsewhere in Minnesota.

"We don't know what the implications are," said Wayne Steffens, an independent researcher who conducted the work under contract for the Minnesota Department of Natural Resources. "I'm not drawing the conclusion that any of this is caused by pollution, but that seems like a ...

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