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Here's a Good Reason to Start Obeying the Speed Limit

The New York Times reports that FBI and state agencies in the US are "vastly expanding their collection of DNA to include millions more people who have been arrested or detained but not yet convicted." According to the article, the FBI plans to ramp up its DNA database to receive 1.2 million new entries per year, compared to the current rate of 80,000 per year. That's led "criminal justice experts [to] cite Fourth Amendment privacy concerns and worry that the nation is becoming a genetic surveillance society," the article says.

The Scan

Pig Organ Transplants Considered

The Wall Street Journal reports that the US Food and Drug Administration may soon allow clinical trials that involve transplanting pig organs into humans.

'Poo-Bank' Proposal

Harvard Medical School researchers suggest people should bank stool samples when they are young to transplant when they later develop age-related diseases.

Spurred to Develop Again

New Scientist reports that researchers may have uncovered why about 60 percent of in vitro fertilization embryos stop developing.

Science Papers Examine Breast Milk Cell Populations, Cerebral Cortex Cellular Diversity, Micronesia Population History

In Science this week: unique cell populations found within breast milk, 100 transcriptionally distinct cell populations uncovered in the cerebral cortex, and more.