Waters shares closed down nearly 13 percent for the trading week ended Tuesday after the company lowered its earnings projections for the third quarter, citing "slower than expected" sales growth. The company, which originally anticipated 8 percent year-over-year growth for the third quarter, said last Friday that it now expects only 3 percent year-over-year growth for the period (see story this issue). The company's shares fell 11.6 percent that day and never recovered.

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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.