Skipping school, marching on the streets and suing governments, children who are too young to vote are demanding more action on climate change as world leaders gather at a major U.N. summit in Poland.

"We will be the main victims of climate change. It will be our generation who suffer the consequences," said Sydney student Aisheeya Huq, 16, who skipped school on Friday to protest, along with tens of thousands of children across Australia.

The nationwide strikes were inspired by 15-year-old Stockholm student Greta Thunberg, who misses school every Friday to demonstrate outside Sweden's parliament. She plans to do so until the country reaches its ambitious goals to curb carbon emissions.