An inventor from Snowdonia has received a donation of $1.4m from Microsoft founder Bill Gates to develop a fridge that keep vaccines cool without using electricity.
ITV News first met Ian Tansley in 2011, when he demonstrated the technology for the first time.
The fridges - which can operate for weeks without needing power - are currently in operation in more than 30 countries.
The money will allow the Tywyn-based firm to start trials in East and West Africa.
More top news
A Muslim teacher, who was denied entry to the US, has told ITV Wales News he was 'distraught' when he was removed from the flight.
George North is on course to return from injury when Wales resume their RBS 6 Nations campaign against Scotland on Saturday.
It's the Year of Legends, and Natural Resources Wales have picked its top 10 places to visit, to discover the myths behind some Welsh tales.