chemistry made open to the public in 1824. In 1810 a large laboratory and lecture room were built in Hawkins House and a similar facility was constructed in Leinster House when the Society moved there, allowing the public lectures on science to continue (in what is now the Dáil Chamber in the Houses of the Oireachtas). In 1835 the RDS co-hosted the British Association for the Advancement of Science, which it also did again in 1957, and from 1838 commenced sponsoring science lectures outside of Dublin. In 1903 the Society imported radium into Ireland for the first time and through experimental methods, devised by RDS Members John Joly and Walter Stevenson, one of the earliest forms of cancer treatment was created to much international acclaim. It subsequently became known as the 'Dublin method'. In 1914 the Society established the Irish Radium Institute to supply radon to Irish hospitals, a function it carried out until the Irish Radiological Institute was established in 1952. In 1961 the RDS held its first exhibition on atomic energy which was followed up in 1963 and 1966, garnering audiences of over 30,000. The Young Scientists and Technology Exhibition was started at this time by physicists Tom Burke and Tony Scott, the latter being a member of the RDS Science Committee. The Exhibition has been held in the RDS since 1966. Today, the RDS continues to promote science in Ireland through the awarding of the Boyle Medal on a biennial basis, alternating between a scientist based in Ireland and an Irish scientist based abroad, with a prize of €20,000. The Boyle Medal has been awarded since 1899 and is Ireland's most prestigious scientific honour. The RDS Primary Science Fair encouraged primary school classes to explore science hypotheses and from 2017 operated in three cities around Ireland, with over 7,000 participating children across all three venues. The RDS Primary Science Fair was cited as a positive example of informal science education by the Government commissioned 'STEM Education in the Irish School System'. In 2019 the RDS developed Science Blast and ESB came on board as title sponsors. Science Blast is managed and delivered by the RDS. In its first year it had over 10,000 primary school pupils engaged with STEM. RDS STEM Learning is a continuous professional development programme for primary school teachers to gain confidence in teaching science in the classroom. Premises The society purchased Leinster House,