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To Evolution: You're Just Not Fast Enough

In the past 10,000 years, people have been evolving rather quickly, though this speed doesn't seem fast enough for everyone, says this US News and World Report article. Anthropologist John Hawks points out that some people can now digest lactose and others have some resistance to smallpox or malaria even though those genes used to be rare. But today's world is changing so quickly that Oxford's Nick Bostrom says biological evolution isn't keeping up and some people are turning to preimplantation genetic diagnosis to choose some of their child's traits. However, bioethicist Thomas Murray adds, "Our capacity to do these kinds of intentional designs is vastly overrated."

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.