Denise O’Reilly at Alexandra Pier in Washington DC

Denise O’Reilly, from Roscrea, Co Tipperary, lives in Washington DC where she works as a chief operating officer for global data and consulting c(...)

Considering the benefits of modern-day sanitation, vaccinations and healthcare, the likelihood of getting sick from our shoes is ‘infinitesimally small as to almost be unwarranted’. Photograph: iStock

Maybe you kick off your shoes at home because you don’t want to track dirt across clean carpets or floors, or maybe it’s just a relief to shed them. (...)

A Roman abacus. But what did the Romans really do for mathematics?

The ancient Romans developed many new techniques for engineering and architecture. The citizens of Rome enjoyed fountains, public baths, central heati(...)

Dr Ruth Freeman says challenge based funding ‘very much focuses on the end user application’

Six teams of researchers are competing for the €1 million Science Foundation Ireland (SFI) Future Innovator Prize, a new challenge-based programme for(...)

It’s a piece of cake: One way to remember the value of pi is by means of a ‘piem’, a poem whose words have letters corresponding to the digits of pi
It’s as easy as pi

Every circle has the property that the distance around it is just over three times the distance across. This has been known since the earliest times. (...)

 People in Los Angeles protest the appointment of  former Breitbart News head Steve Bannon, as chief strategist of the White House. Photograph: David McNew/AFP/Getty Images

Donald Trump’s election as the next US president after a xenophobic and Islamophobic campaign has switched on a spouting tap of hate. He has emboldene(...)

 Republican presidential nominee Donald Trump holds a Purple Heart, given to him by veteran Louis Dorfman, during a campaign event at Briar Woods High School in Ashburn, Virginia. Photograph:  Alex Wong/Getty Images

Donald Trump’s vice-presidential candidate Mike Pence appeared to split with the Republican nominee on Wednesday by endorsing House speaker Paul Ryan (...)

Permanent partying: from Frat Boys: Inside America’s Fraternities

If you’ve seen any of those Hollywood comedies set on US campuses (think the National Lampoon franchise – or, better still, don’t) you know a little a(...)

 New York could also inject a new momentum behind the leader in the Republican race, businessman Donald Trump, in his bid to be the party’s nominee. He has 744 delegates to 559 for Texas senator Ted Cruz. Photograph: Christopher Lee/The New York Times

The second-biggest prize in the Democratic presidential election – and the fourth-biggest in the Republican race – will be up for grabs when primary v(...)

Ted Cruz: trying to stop Donald Trump getting the 1,237 delegates needed to secure the Republican nomination in July. Photograph: Brendan Bannon/The New York Times

Republican US presidential hopeful Ted Cruz won all 14 delegates at stake on Saturday in Wyoming. Mr Cruz is trying to prevent Mr Trump from obtaini(...)

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