New guidelines for the diagnosis of Alzheimer's disease are to be released today by the National Institute on Aging and the Alzheimer's Association, reports The New York Times. The new definition breaks the disease down into three stages: when dementia has set in, when there are symptoms, but the person can still perform daily tasks, and when there are not yet symptoms, but changes are occurring in the person's brain. That early, symptom-free stage would be assessed through biomarkers.

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The New York Times and ProPublica look into the close relationship between a startup and Memorial Sloan Kettering Cancer Center.

Yahoo News reports millions of dollars are being transferred from NIH, CDC, and other programs to pay for the housing of detained undocumented immigrant children.

In Science this week: in vitro generation of human reproductive cells, and more.

Researchers gave a handful of octopuses MDMA to find that they too act more social on the drug, Gizmodo reports.