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Malcolm Ritter

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This undated photo provided by the Salk Institute on Jan. 24, 2017 shows a 4-week-old pig embryo which had been injected with human stem cells. The experiment was a very early step toward the possibility of growing human organs inside animals for transplantation. (Salk Institute via AP) (AP)

Scientists take first steps to growing human organs in pigs

Malcolm Ritter

Study finds signs of brain changes in pot smokers

Malcolm Ritter

Dzhokar Tsarnaev (FBI)

Was Dzhokar Tsarnaev just following his brother’s lead?

Malcolm Ritter

Good news for East Coast: Nor’easter to weaken

Malcolm Ritter

Conservation slowing animal extinctions, study shows

Malcolm Ritter

Nobel Prize given for test tube baby research

Karl Ritter, Malcolm Ritter

Psychedelic trips aid anxiety treatments in study

Malcolm Ritter