Protesters opposed to the contentious M3 motorway being routed near the Hill of Tara today called on world-renowned campaigners Al Gore and Bono to back their demonstrations.
Tarawatch handed a letter to the former US Vice President before he spoke at talks in central Dublin on the impact of global climate change.
Rock star Bono, who turned out to hear Mr Gore at the private conference, was also approached by campaigners as he arrived at the Royal College of Surgeons at St Stephen's Green.
Laura Grealish, of Tarawatch, said: "We hope Mr Gore gets a chance to see what is really going on here in Ireland, and influences this Government to make sustainable decisions with regards to spending taxpayers money."
In the letter to Mr Gore, campaigners stated: "The M3 motorway is highly unsustainable, both environmentally and economically.
"At this rate, the Irish taxpayer is likely to be footing the bill for EU fines due to the illegality of the M3 project, as well as Kyoto fines for failing to act to stem carbon emissions.
"Additionally, taxpayers will continue to pay a private firm for the M3 motorway for the next 45 years."
Government Ministers Eamon Ryan, Noel Dempsey and former Environment Minister Dick Roche, who rubber stamped the controversial route, were heckled as they arrived at the talks.