Students from four Mayo secondary schools are participating in the BT Young Scientist & Technology, which gets underway today and runs until Friday.
It's a virtual exhibition again this year, with 550 projects chosen from 219 schools in 29 counties.
Students from Coláiste Pobail in Achill, Coláiste Cholmáin and Mount St Michael in Claremorris and St Gerald's College in Castlebar are among over 1,000 students representing their schools and communities in this year's exhibition, which visitors can enjoy from their comfort of their home, school or workplace, free of charge.
The finalists will be interviewed by a panel of judges, with over 200 prizes on offer for individual students, groups and teachers.
This year, new and adapted technologies feature in one-fifth of all project entries, while climate change, the environment, and health issues - including Covid-19 - also feature strongly.