Tag Archives | excessive


Fertilizer run-off disrupting food chain in unexpected ways

Conventional wisdom has held that additional nutrients flowing into stream systems causes an increase in production all along the food chain, from the tiniest organisms up to the largest predators. But a long-term, ecosystem-scale study by a team of University of Georgia researchers has now thrown this assumption into question. The researchers found, unexpectedly, that […]

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The Dark Side Of Dopamine

While there is a large amount of evidence to support the idea that the brain chemical dopamine mediates positive effects, such as reward, happiness and pleasure; a new study inThe Journal of Neuroscience suggests that dopamine is also intimately involved in emotions like dread and fear. The new findings may help explain why dopamine dysfunction […]

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