1 / 3   An aerial view showed a giant postcard of 125,000 drawings with messages from children around the world to appeal stopping climate change on the Aletsch Glacier at an altitude of 3,400 meters near the Jungfraujoch in the Swiss Alps on Friday. /VCG Photo

2 / 3   The mosaic of postcards totally occupied 2,500 square meters that was laid out in the snow to "boost a global youth climate movement ahead of the next global climate conference (COP24) in Poland next month," said the WAVE Foundation, which organized the event in cooperation with Swiss authorities. /VCG Photo

3 / 3   A person walked over 100,000 postcards with messages against global warming, which the event has smashed the Guinness World Records for giant postcards. /VCG Photo