Scientists have created a wonder material out of graphite – but the big challenge is how to make a profit from it

Flashy marketing could not mask healthcare Bill was a wealth transfer to the rich

Taoiseach’s trip to US on St Patrick’s Day became most significant during peace process

Tillerson shares Trump’s ‘vision for restoring the credibility’ of US foreign relations

Amazon Echo’s Alexa and friends help make speech-activated technology more palatable

Republican presidential nominee praises Turkey’s Erdogan over way he handled coup

Republicans wring their hands as the New York billionaire savours his unlikely victory

Michelle Obama and George W Bush among the mourners at California ceremony

Bush patriarch has used his new biography to tackle some family politics

Tariq Aziz: April 28th, 1936 - June 5th, 2015

The neocons are swirling around Jeb, ready to inhabit another president Bush

To be seen as his own man, Jeb Bush needs to let go of his big brother’s props

Former governor seeks to distance himself from his brother’s unpopular foreign policies

Tea Party zombies continue to maraud around the Hill

Relationships between Ireland and the US were not all plain sailing

Appeals from then taoiseach made secretary of state James Baker feel ‘guilty’ for supporting Tax Reform Act