In an ever more complex world, lawmaking increasingly depends on expert information. At the same time, more citizen participation in the lawmaking process (e.g. through crowd-sourcing) is discussed. More participation and more expert information can strengthen representative democracy. Yet they can also be a challenge to the publicity of the parliamentary process. I will focus on public participation. Forms of participation in the law-making process in Austria illustrate the publicity problem. Against this background, I will take up the field of legislation on the environment more generally and discuss, whether the participation the Aarhus Convention calls for with regard to plans, programs and administrative regulations, should be extended to the lawmaking arena and which challenges might arise out of such a transfer.