A look at the international race to create human eggs and sperm in the lab
By Rob Stein, Regina G. Barber, Berly McCoy,
NPR [cites CGS' Marcy Darnovsky]
| 11. 29. 2023
In which we meet the pioneers of one of the most exciting — and controversial — fields of biomedical research: in vitro gametogenesis, or IVG.
The goal of IVG is to make unlimited supplies of what Hayashi calls "artificial" eggs and sperm from any cell in the human body. That could let anyone — older, infertile, single, gay, trans — have their own genetically related babies. As such, the field opens up a slew of ethical concerns.
But that isn't stopping researchers from pressing forward.
So, this episode NPR science correspondent Rob Stein gives us a glimpse into the global race to create the first artificial human embryos to see how the competition is unfolding.
Related Articles
By Rob Stein, NPR | 09.30.2025
Scientists have created human eggs containing genes from adult skin cells, a step that someday could help women who are infertile or gay couples have babies with their own genes but would also raise difficult ethical, social and legal issues...
By Jessica Mouzo, El País | 10.03.2025
DNA is the molecule of life: this double-helix structure, present in every cell in the body and organized into fragments called genes, stores the instructions for making organisms function. It is a highly precise biological machine, but sometimes it breaks...
GeneWatch UK has prepared a briefing on the genetic modification of nature for the International Union for Conservation of Nature (IUCN) Congress in October 2025
The upcoming Congress claims to be “where the world comes together to set priorities and drive conservation and sustainable development action.” A major concern for those on the outside is that the Congress may advance plans to develop and encourage the use of synthetic biology in nature conservation. This could at first glance sound like...
By Aaron Ginn, The Washington Post | 09.12.2025
Earlier this year, I had dinner in D.C. with Jensen Huang, the president and chief executive of Nvidia. At one point, he said something that struck me: “Why is everyone here so negative?”
He wasn’t referring to the economy...