Earth Hour is a worldwide grassroots movement for the planet organized by the World Wide Fund for Nature (WWF). Earth Hour engages a massive mainstream community on a broad range of environmental issues.
Since 2011, The International Waterbird Census (IWC) in Serbia is coordinated by Bird Study and Protection Society of Serbia. The IWC is coordinated by Wetlands International and it is organized every year in most countries of the world.
Every year, from its very beginning, Arcus Ecological Association takes part in organization of series of popular science lectures.