Teenage Waterford entrepreneur Jordan Casey is interviewed during a break at a conference on European youth in business in Madrid. Photograph: Carlos Lujan/The New York Times

When Waterford’s Jordan Casey takes to the stage to present his technology business, he jumps onto the platform rather than walking up the access ramp(...)

Yahoo senior vice president of mobile and emerging products Adam Cahan. Photograph: Ethan Miller/Getty

Yahoo is setting its sights on the growth of wearables and other mobile devices as the internet star of the last dotcom boom tries to transform itself(...)

Yahoo chief executive Marissa Mayer has promised not to “screw up” its acquisition of blogging network Tumblr. Photo by Justin Sullivan/Getty Images)

Internet giant Yahoo has confirmed that it is to acquire blogging network Tumblr for about $1.1 billion (€ 856m), in an effort to lure more use(...)