sentences:  China has been omnipresent at all international Digital Earth conferences since and has recently founded the International Society for Digital Earth, one of the first NGOs created by the Chinese Academy of Sciences.In 2009, the International Symposium on Digital Earth returned to Beijing for its 6th meeting.In 2000, the United Nations Environment Programme (UNEP) advanced the Digital Earth to enhance decision-makers' access to information for then Secretary-General Kofi Annan and the United Nations Security Council.