Grow it Yourself (GIY): A presentation by GIY, a registered charity which aims to inspire people to grow their own food. Terenure Library, Dublin, 7pm.
Mate Choice: Is Sex Really Mean?Dr James McInerney on courtship and displays of affection among animals. NUI Maynooth, 7pm. Admission is free.
TOMORROW
ISTA Senior Science Quiz:The regional finals of the Irish Science Teachers' Association quiz, in 11 venues involving hundreds of Leaving Certificate students. For more details log on to the website www.ista.ie.
Mountains in the Sea:An illustrated talk on the bird life, ecology and culture of the volcanic island Tristan Da Cunha by Brad Robson, 8pm, Sligo Institute of Technology.
