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The enzyme that gives a powerful tool known as a “base editor” the ability to change DNA also has an off-target effect on RNA (above). NOBEASTSOFIERCE SCIENCE/ALAMY STOCK PHOTO

Powerful CRISPR cousin accidentally mutates RNA while editing DNA target

When researchers first reported 3 years ago that they had created base editors, a version of the powerful genome-editing tool CRISPR, excitement swirled around their distinct powers…

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Health workers at an Ebola treatment center in the Democratic Republic of the Congo, which was attacked earlier this year by armed men JOHN WESSELS/AFP/GETTY IMAGES

Ebola outbreak in Congo still not an international crisis, WHO decides

No need to sound the world’s loudest public health alarm bell about the lingering Ebola outbreak in the Democratic Republic of the Congo (DRC), an…

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