Genetic Engineering

In a world first, a bespoke gene-editing therapy benefited one child. Now researchers plan to launch a clinical trial of the approach

Surgeons think the first transplantation of a pig lung in a human is an exciting step forward for the field, but many questions remain open

Colossal Biosciences bold announcements about its project to replicate dire wolf traits have drawn criticism from many scientists, but the billion-dollar firm is not backing down

A CRISPR treatment seems to have been effective for a baby’s devastating disease, but it is not clear whether such bespoke therapies can be widely applied

Bacterial genes protect animals—and their predators—from harmful contamination

Rather than resurrect extinct species, cloning technology could save those at risk of dying out, like the red wolf, but only with solid conservation efforts and habitat protections

You have around 35 trillion red blood cells moving around your body at all times. Typically they are rounded and flexible. What happens when they aren’t?

A bioluminescent petunia led me to a world of radiant mushrooms, 19th-century experiments and a modern rivalry between scientists in Russia and the Americas

A method that provides cloned embryos with a healthy placenta has led to the first cloned rhesus monkey that has survived to adulthood and could pave the way for more research involving the primates

Researchers created a monkey that combines cells from two different individuals; a lab technique gave it a strange green glow

Scientists altered the genomes of female fruit flies, allowing them to reproduce without any contribution from a male

The U.K.’s fertility regulator reveals that at least one child has been born using mitochondrial replacement therapy, but the procedure’s effectiveness remains to be seen