A vote will take place later to change the law on organ donation. If the legislation is passed Wales will become the only part of the UK where doctors will presume consent's been given. Health Minister Nick Drakeford says it will save lives.
More top news
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