Five things you need to know today

Trump gets the nod in America while Ireland bakes in the blistering sun

Sun Bathing in Trinity College as temperatures soared across Ireland on Tuesday. Photograph: Nick Bradshaw/The Irish Times.

1. Housing

Frank McDonald notes that given housing output in Ireland reached 90,000 units during the boom, although most of these were built in the wrong places and left us with numerous "ghost estates". The aim of increasing output to at least 25,000 new homes a year by 2020 is quite modest given the rate of population growth and the current level of need.

2. Donald Trump

"Congratulations dad, we love you." In America, Donald Trump crowned an incredible primary campaign by securing the Republic party's formal nomination for president on Tuesday night.

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3. Limerick crash

Gardaí suspect murder-suicide in the deaths of a man and his three-year-old son in a car crash in Co Limerick yesterday, shortly after the child's mother was injured in a domestic dispute.

4. Weather

The Republic basked, or baked – depending on your perspective, in the highest temperatures recorded since 2013, prompting Met Éireann to issue a rare high temperature alert. However, a return to the normal could be upon us as soon as Wednesday.

5. Hate mail

A woman who sent a "vile" Christmas card to an 11-year-old girl has been ordered to pay €600 into a court poor box. Gardaí deemed the content of the card to be so offensive it could not be read out in open court.

And finally... Michael Harding writes that he often wakes "full of bile and anger about Trump or Putin or some other loola in the public eye. And the only solution I have in such moments of distress is to take refuge in prayer."