...that gas bubbles travel downwards in a pint glass of Guinness ale?
...The Wanderings of Oisin, published in 1889, was Yeats' first publication outside of magazines, immediately winning his reputation as a significant poet?
...that Irish songwriter Christy Moore wrote a comic song about the building of the Knock Airport, which transports hundreds of pilgrims to and from the Roman Catholic shrine at Knock, declaring, "I've never seen a miracle like the airport up in Knock"?
...that, unlike oft-violent hurling, its female variant, camogie, forbids any unnecessary physical contact?