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Science  08 Feb 2019:
Vol. 363, Issue 6427, pp. 564-566
DOI: 10.1126/science.363.6427.564

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Summary

In science news around the world, scientists release a rare, unscheduled update to the World Magnetic Model, which charts Earth's magnetic field and sets the international standard for many navigational technologies; the update accounts for a speedup in the migration of the magnetic north pole from northern Canada toward Siberia in Russia. The butterfly population overwintering in Mexico more than doubles, covering 6.05 hectares of forest, the largest area in more than 10 years. But a study reports that 40% of all insect species are threatened with extinction, largely because of intensive agriculture and pesticides, posing "catastrophic consequences" for ecosystems and humans. Early-career scientists in India reject a 25% pay hike offered by the government in response to months of protests. Researchers in Brazil announce a project to repeat biomedical experiments from articles published by authors based there, in what is believed to be the first reproducibility study to focus on a single country's literature instead of a single discipline.