Top of the class: US professor goes viral with inventive April Fool's prank

Viewed over 1.7 million times online, a US mathematics professor has gone viral for his inventive April Fool's prank in which he interacts with himself through YouTube. Video: Matthew Weathers

100 days of the Government

Political Editor of The Irish Times, Pat Leahy, reviews the beginning of Micheál Martin‘s second term as Taoiseach. Video: Dan Dennison