This Week in Science

In this week's Science, an international research team presents a global map of genetic diversity within species, revealing that for amphibians and mammals, such diversity is highest near the equator and that it is influenced by humans. Using publicly available DNA databases, investigators focused on a subset of DNA representing 4,500 amphibian and mammalian species, matching the data with geographic information. In all cases, genetic diversity was higher in the tropics than in cold climates.

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Two researchers have found that behavioral genetic defenses in criminal cases don't tend to affect outcomes, according to Popular Science.

Researchers report that while host genetics influence the oral microbiome, they don't appear to affect cavity-causing microbes, the Economist says.

Pandas' gut microbiomes change as what they eat changes with the seasons, writes Discover's Inkfish blog.

In PLOS this week: comparative genomic study of malaria-linked macaque parasite, search for apple root reference genes, and more.