The western corn rootworm continues to be on the rise in Europe. Why attempts to biologically target this crop pest by applying entomopathogenic nematodes have failed, can now be explained by the amazing defense strategy of this insect. In their new study, scientists from the University of Bern, Switzerland, and the Max Planck Institute for Chemical Ecology in Jena, Germany, show that the rootworm larvae are able to sequester plant defense compounds from maize roots in a non-toxic form and can activate the toxins whenever they need them to protect themselves against their own enemies. (eLife, November 2017, DOI: 10.7554/eLife.29307.001)

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Mercury is one of the top 10 chemical concerns for public health according to the World Health Organization (WHO). In more than half of Swedish lakes the mercury levels are so high that eating the fish is a threat to the health of people and wildlife. To make matters worse, the problem seems to have no solution in sight. But new research gives hope: the mercury problem could very well be blowing away in the wind.

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