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Neanderthals Are Everywhere

Svante Pääbo is back. In the advanced online section of Nature, he and his collaborators report that the mitochondrial DNA from hominid remains found in Uzbekistan and southern Siberia are similar to the variations seen in European Neanderthal mtDNA, indicating that Neanderthals' range extended about 2,000 km further east than previously thought.  The New York Times wonders if Neanderthals might have wandered even further east, into the domain of Homo erectus.

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.