The outcome of diverse sources are summarized in this list of "sustainability-related problems", determined by the political action plan documented in Agenda 21, the Millennium Declaration defining the Millennium Development Goals, both agreed at the Millennium Summit in New York 2000, and the WSSD Plan of Implementation decided upon at the World Summit on Sustainable Development in Johannesburg 2002.
不同来源产生的结果总结在可持续性相关问题的列表中，由议程21、定义出千年发展目标的千年宣言（两者均是2000年在纽约举办的千年峰会取得的成果）以及WSSD实施计划（在2002年在约翰内斯堡举行的可持续发展的世界峰会上确定）中记录的政治行动计划所确定。