President Michael D Higgins has addressed the opening ceremony of the BT Young Scientist and Technology Exhibition.
In his address, President Higgins told students that they opportunity to change the world.
"It is up to you to protect it, nurture it and all those who inhabit it."
Now in its 56th year, the exhibition showcases some of the brightest young brains and their innovative projects.
Over 1,000 students are involved in this year's event, which is taking place entirely online.
Two hundred prizes are up for grabs as well as the top prize of the Young Scientist Trophy and €7,500.
Students Investigate Effects Of Covid-19 Lockdowns
Many projects touched on Covid-19.
Megan Hegarty and Tori Gallagher from Loreto Community School in Donegal investigated which generation was coping best with the pandemic.
While Sophie McCroy from from St Mary’s Secondary school in Cork focused on the effect lockdown has had on domestic abuse victims.
"I feel like the lockdown period has exasperated the situation [around domestic abuse]."
Ms McCroy said the pandemic has highlighted the abuse that's taken place "even prior to the pandemic."
Technology Category Turns To Invention
Meanwhile, in the technology section some students looked at creating completely biodegradable coffee cups and improved PPE.
Hugo Phelan from Glenstal Abbey School in Limerick tested just how accurate our weather apps are.
"My goal is to find the most accurate weather app."
Mr Phelan did this by building his own weather station and comparing the results with apps predictions.
Climate change also features in the exhibition.
A first year student from Patrician Presentation School in Fethard County Tipperary was inspired by his surroundings.
John David O'Donnell used wool from the sheep of his family farm to create a plastic packaging substitute.
"For my study I looked at using natural materials to combine with sheep wool."
The farming-enthusiast says he was able to create a carboard like structure that he hopes will replace plastic in time.
The exhibition is available on Young Scientist's website until Friday.