TODAY:A Hitchhiker's Guide to the Universe, lecture, 8pm; Institute of Technology Sligo, free.
Mars 3-D, lecture, 8pm; Institute of Technology Carlow, free
Cloning, public discussion, 6.30-8pm; Hume Building, NUI Maynooth, free
Chemistry against crime, lecture, 2pm; DIT Kevin Street, free, but pre-book at (01) 402-4780
Dublin City University open science day, 10am, 11am; Atrium Science Building DCU campus, free, but pre-book at (01) 700-5063
TOMORROW
Tales from The Trash Heap: Adventures in Recycling, workshop, 3.30pm; Balbriggan Library, free, but pre-book at (01) 802-0427
Big Bug Show, 10am; Castletymon Library, Castletymon Shopping Centre, free, but pre-book at (01) 452-4888; show repeated at 3.30pm at Lucan Library, pre-book at (01) 621-6422
The Incredible World of Ireland's Leatherback Turtles, lecture, 9am; Brookfield Medical Complex, University College Cork, free, but pre-book at (021) 490-3299
From Castle to Observatory, the Story of Blackrock Castle, 11.30am; Cork Institute of Technology, free, but pre-book at (021) 432-6580