Category Biology

An on-off switch for gene editing

Over the past decade, the CRISPR-Cas9 gene editing system has revolutionized genetic engineering, allowing scientists to make targeted changes to organisms’ DNA. While the system could potentially be useful in treating a variety of diseases, CRISPR-Cas9 editing involves cutting DNA…

New Species of Bird Discovered in Brazil

A team of ornithologists from the United States, Canada, Brazil, and Paraguay has described a new species of trogon from the Atlantic Forest of north-eastern Brazil. The trogons and their close relatives, quetzals, are members a pantropically distributed order of birds…