COP 24 summit on climate change in KatowiceYoung participants of the # CLIMATE STRIKE demonstration during the COP 24 summit at the ' Spodek ' multipurpose arena complex in Katowice , Poland , 14 December 2018 . Greta Thunberg , the 15 - year - old Swedish activist , on 12 December 2018 called for a global climate strike . The day of action is set for 14 December at ' your school ' or ' anywhere you feel called . ' Thunberg , who ' s made headlines for her now - weekly school strikes to urge her home country to take bold climate action . EPA / Andrzej Grygiel POLAND OUT ▶ 뭐 하 고 놀 까 ? # 흥 ▶ 쇼 미 더 뉴스 ! 오늘 많이 본 뉴스 영상 ▶ 네이버 홈 에서 [ 연합뉴스 ] 채널 구독 하 기