Early Arrival

Scientists have long been searching for biomarkers for early detection of Alzheimer's disease. Now, new research suggests that such markers might be apparent even earlier than thought.

In a study published this week in The Lancet Neurology, a team of researchers found that biomarkers linked to Alzheimer's were apparent at least 20 years before the onset of symptoms.

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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.