May 13, 2015 | Sinead

I feel nervous when there's talk about editing human DNA. Many people believe it's unethical, but a cloning expert has said that we should edit human genes to tackle genetic diseases such as cystic fibrosis.

Last month, scientists working with human embryos that couldn't develop further used a method called CRISPR to see if they could change the embryos' DNA. This was the first time a study like this had been successful. Modifying embryos outside the lab is still a long way off, but the debate is starting to heat up.


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Should we edit DNA in human embryos?

Lego DNA

Scientists in China used CRISPR to change DNA in non-viable human embryos.


Image: Flickr/Michael Knowles

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