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A New Tree

Armed with gene sequences, researchers led by the University of California, Berkeley's Jillian Banfield have drawn an expanded tree of life, marked by an abundance of bacteria.

"It is a momentous discovery — an entire continent of life-forms," Eugene Koonin from the National Center for Biotechnology Information, who was not involved in the study, tells the New York Times.

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NPR reports that researchers have developed chimeric embryos as part of work toward growing human organs in animals for organ transplants.

According to the Washington Post, the Biden Administration is set to make changes to federal restrictions on fetal tissue research.

In Science this week: approach to isolated trace DNA from archaic humans from sediments, and more.

Texas Monthly looks into the DNA Zoo being collected by Baylor College of Medicine researchers.