Shares in PerkinElmer fell 13.3 percent for the trading week ended Tuesday after reporting lackluster second quarter revenue growth and a fall in profits (see related article). Bruker also had a poor week, falling 7.6 percent ahead of its second-quarter results, which were released after the closing of trade on Tuesday. Beckman Coulter led gainers with a slight rise of 2.4 percent.

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The London School of Economics' Daniele Fanelli argues at the Proceedings of the National Academy of Sciences that the reproducibility crisis in science isn't as dire as some say.

A team of researchers in Portugal has examined the genomic basis for racing pigeons' athleticism and navigational skills, finding it's likely polygenic.

Wired reports that diagnostic firms continue to seek, post-Theranos, the ability to diagnose diseases from small amounts of blood.

In Science this week: analysis of DNA from ancient North Africans, and more.