Overlooked mass migration spotted.

The article discusses research which found that about 3.5 trillion arthropods migrate over southern Great Britain annually. It references a study by Jason Chapman et al and published in the December 23, 2016 of "Science." Topics covered include the findings of an analysis of decade of data from special entomological radar and net sweeps, the suggestion that more species may have specialized biology for seasonal migrations, and the idea that a lot of arthropods migrate overhead.