Two young entrepreneurs with a scheme to convert cow manure to cash will represent Ireland at a global youth entrepreneurship showcase in New York attended by Chelsea Clinton.

Teenagers who use seaweed to produce treats were last night named Youth Entrepreneurs of the Year in a competition organised and run by Foróige. The four teenagers from Co Donegal — Mary Kate Carr, Aimee Byrne, Rebecca McShane and Ronan O’Hare were honoured at a Mansion House, Dublin ceremony.