Heande (The Health, The Environment and Everything) is an open Mediawiki-based project hosted by National Public Health Institute of Finland. Heande aims to improve environmental and health related risk assessments by making them as transparent as possible. Heande relies on open participation and free content which makes Mediawiki essential part of this project. Heande aims to give everyone a chance to make contributions in risk assessment and decision-making related discussions. Heande is currently under development.