You are invited to join the 23rd International Conference on Environmental Indicators that will take place at Technion in Haifa, Israel. The conference will explore the scientific bases and uses of indicators (descriptive, efficiency and assessment parameters) under the biological, chemical, physical aspects as well socio-economic facets. This year’s theme is “Chemistry and Environment,” although other subjects related to environmental indicators are also welcome (see topics). We bring together top scientists from all over the world to tackle those past, present and future environmental challenges. Our motto describes the paramount aims of our group:“An indicator is like a lighthouse, if we do not pay attention, we’ll end up crashing on the rocks”.