(WTTW News)
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Far more Chicagoans may have been infected by COVID-19 than previously thought. We discuss the preliminary findings of a new study with Dr. Elizabeth McNally of Northwestern University Feinberg School of Medicine.

(Courtesy Courtesy Qiang Sun and Mu-ming Poo, Chinese Academy of Sciences)

China’s landmark cloning of primates has some worried it sets a dangerous precedent. We discuss the breakthrough – and what it could mean for the future of cloning.