Nenad Petrović

Today Earth Day is celebrated in more than 150 countries around the world. The initiative was launched in San Francisco in 1969. Officially, Earth Day is celebrated since UN’s conference …

Earth hour is an initiative launched 2007 in Sydney by World Wildlife Fund-a (WWF). The initiative began as a symbolic one hour lights turn-off, but has grown into one of …

World Water Day is celebrated on March 22 every year since 1993. The initiative was launched by the UN-Water organization, which aims to raise awareness of water importance and the …