The International Olympiad on Climate Change and Environmental Issues (IOCE) united participants from 11 countries from all over the world: Russia, Belarus, Djibouti, Bangladesh, Pakistan, Ethiopia, Myanmar, India, Qatar, Costa Rica, Tajikistan. One-of-a-kind intellectual competition was developed by top experts of the International Research Сenter for Ecology and Climate Сhange at Sirius University and the partners. This Olympiad has no equivalent in the world.