A medical team is trying to intervene to stop stabbings, rather than waiting to treat them when they happen.Read more
Imperial College London
The NHS is trialling an app which claims to analyse people's DNA to help them eat more healthily.
Researchers at Imperial College London will study the effects of DNA-personalised food choices on pre-type 2 diabetes patients.
Some experts warn that the science the apps are based on is at "too early" a stage for individual risks to be predicted.
The Crowne-Spencer family have been trying out the app during their weekly shop.
You can watch Inside Out on BBC One at 20:30 GMT on 11 March and on the iPlayer for 30 days afterwards.
Scientists at Imperial College London say the "breakthrough" could help thousands of heart patients.
Nasa says organic matter suggests there might have been life on the planet.
Health editor, BBC News online
Claudia Campenella, 31, works as a student support administrator at a UK university, and in her spare time she is a poo donor.
"Some of my friends think it is a bit weird or disgusting, but it doesn't worry me. It's very easy to donate and I just want to help with medical research. I'm glad to contribute."
Her faeces, teeming with "good" bugs, will be put into the bowel of a sick patient to help their poorly gut get better.
Claudia knows her donation is extremely useful - that is why she does it - but is her poo extra special?
Scientists believe some people's poo might contain an ideal mix of healing bacteria to fix gut diseases, making them super-donors.
After losing two babies to preterm birth and one miscarriage, Sidra found help in a new research centre.
The chief scientist on Nasa's InSight mission, Bruce Banerdt, says our understanding of Mars' interior is fuzzy.