RDS Science Live demonstration lecture, "Light, Smoke, Action", Galway/Mayo Institute of Technology, 7.30 p.m., free.
Lecture, "The Great GM Debate", Carlow Institute of Technology, 1.10 p.m., free.
Lecture, "How Astronomers See Things", Dolphin's Barn Library, 11 a.m., free.
Lecture, "Swans - Birth, Marriages and Deaths", Sligo Institute of Technology, 8 p.m., free.
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Open day at Dunsink Observatory, Dublin 15, free.
Lecture, "The Human Genome in the New Millennium", University College Cork, 8 p.m., free.
Conference, "Science in the Service of the Fishing Industry", Merrion Room, RDS, 9 a.m.6 p.m., £25.