Wolpert, who conducted research at University College London, was known for his work on morphogenesis and pattern development in embryos and for his multiple books and broadcast appearances.

The International Commission on the Clinical Use of Human Germline Genome Editing claims the technology is still too risky for therapeutic use.

Without a brain, the frog embryo immune system doesn’t receive the signals it needs to mobilize macrophages and fight infections.

Florence Sabin was known for her pioneering research and efforts to support women in science.

The modification of three babies’ genes by He Jiankui drew widespread criticism from scientists.

From bubbling plants to endangered whales, here are some amazing images from The Scientist in 2019.

Extended pluripotent stem cells from mice can self-organize to form blastocyst-like structures called blastoids that enable a closer look at early mammalian development.

The researchers aim to grow transplantable human organs from primate embryos.

In a species of freshwater turtle, embryos can move toward warmer or cooler environments within the egg and thus help choose their sexual destiny, but not all experts are convinced.

After the reported birth of CRISPRed babies in China, experts want to take time to consider the scientific, social, ethical, and philosophical consequences of editing heritable human DNA.

The extremely rare event, thought to be caused by two sperm cells fertilizing the same egg simultaneously, was last reported in 2007.

To study the fate of stem cells in developing chick embryos, researchers trace their steps over time.

A bright blue stain highlights the sensory nerves of a developing mouse embryo.

Since He Jiankui presented his results at last week’s gene editing summit, researchers have raised concerns about his protocol, calling the procedure “amateurish” and “unconscionable.”

Studying how neural crest cells journey through the embryo, this Caltech developmental biologist has revealed how they form major cell types, including peripheral neurons, bone, and smooth muscle.

Despite a premature and ethically sketchy claim of genome editing in twin girls, an outright prohibition could blunt promising, responsible progress.

He Jiankui, who reportedly edited the genomes of two babies already, broke the news at a conference in Hong Kong.

He Jiankui says he has successfully used CRISPR-Cas9 to tweak the genes of twins born earlier this month. Some independent experts are dubious.

The bipaternal pups died soon after birth, but mice with two mothers grew into fertile adults.