Child health experts are taking the unprecedented step of trying to contact 26,000 families across Wales to get a better understanding of how premature babies develop in the long term.
Dr Martin Edwards, one of those leading the study from Cardiff University, says there's been minimal research in this field: "This is an area of the Health Service that hasn't really been monitored or observed until now."
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Andrew walks the hills of Flintshire & Hannah visits a new saltmarsh on the Gower Peninsula, and a link to our Gallery of Wales.
This evening cloud will continue to spread eastwards and winds will strengthen. Patchy rain in many places overnight.
Bafetimbi Gomis' fortune in front of goal might just have changed for the better, according to Swansea manager Garry Monk.