Social Searching on the 'Net; Prime Numbers; Ireland's Animals

IMAGE: The cover of 'Ireland's Animals, myths, legends & folkore' by Niall Mac Coitir [Credit: Gordon D'Arcy]. The Question Is Can we improve the quality of our Internet searches through co-operation? We ask Barry Smyth, Professor of Computer Science at UCD. Writers' Room  We speak to Niall Mac Coitir, author of 'Ireland's Animals, myths legends and folklore'  What's it All About? Prime numbers are the most basic building blocks of mathematics. Professor Des McHale, a mathematician at UCC, explain what prime numbers are, and why they are important to us all.  To contact the show, email: [e-mail]