This week Carl Edwards talks to Jon Puzey from Shelter Cymru about Wales' problems with empty homes and Rhian Smith from Home Start UK about families in crisis.
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The world record attempt will raise money for the foundation set up in memory of the Olympic gold medallist, who died in May 2013.
In today's Newsweek, Carl talks about what the 'No' vote in the Scottish Referendum could mean for Wales and the impact of legal highs.
England manager talent spotting at Swansea City v Southampton at the Liberty Stadium