Sacchi et al. v. Argentina et al.

Sixteen children filed a petition alleging that five countries had violated their rights under the UN Convention on the Rights of the Child by making insufficient cuts to GHG emissions. Petitioners claim that the rights to life, health, prioritization of the child's best interest, and cultural rights have been violated. All defendants have ratified the convention and signed the Paris Agreement, but failed to make or keep commitments that align with keeping temperature rise under 2 degrees Celsius.

http://climatecasechart.com/non-us-case/sacchi-et-al-v-argentina-et-al/

https://climate-laws.org/geographies/international/litigation_cases/sacchi-et-al-v-argentina-et-al