Her campaign #FridaysForFuture has since inspired a global student-led movement encouraging young environmentalists to skip school on March 14 in demand of stronger government action against climate change.
The movement started last August, when a 15-year-old girl in Sweden named Greta Thunberg began refusing to go to school and instead demonstrated in front of Sweden's parliament to call attention to climate change after Sweden experienced its hottest summer on record, according to The Guardian.
Since then, she has been missing lessons most Fridays to stage her regular protests.
Omar's daughter, Isra Hirsi, 16, of Minneapolis, is spearheading the nationwide youth climate strike protests across the U.S.in almost 50 states and Washington, DC., along with co-organizers Alexandria Villasenor, 13, of NY, and Haven Coleman, 12, of Denver.
While some politicians have criticized the students, saying they should be spending their time in school and not on the streets, scientists have backed the protests, with thousands signing petitions in support of the students in Britain, Finland and Germany.
"We're out to look after the planet, because it's the only one we've got", he said.
At the 2015 Paris climate conference, countries pledged to work to limit the rise to 2 degrees Celsius, a step that will require a radical reduction in the use of coal and fossil fuels.
Thirteen-year-old Aoife Powell, who is in her first year of secondary school, is determined to attend the Dublin protest.
Students like Marlow Baines point to Wednesday's historic storm in Colorado as an example of climate change's effects.
"We've been talking to some students who aren't able to come to our strike because it's too far, and they're doing their own mini-marches around their schools", says organizer Julia Sampson.
Other changes needed to curb greenhouse gas emissions include ramping up renewable energy production, reigning in over-consumption culture now spreading beyond the industrialized West and changing diets, experts say.
"The fight against climate change is going to be uncomfortable, in parts, and we need to have a society-wide discussion about this", said Quaschning.
Glover, of Marlborough Boy's College, said it was worth getting a black mark on his attendance record to encourage the community to take action on climate change.
"I think a big reason why my mum and my dad are so supportive is that they've always pressed that as people who have privilege it is our job to speak out for people who do not", she says.