ส�ำนักงานคณะกรรมการสิทธิมนุษยชนแห่งชาติ highest standard can be regarded as violation of the rights holders already occurred. People can always claim against the State to protect the environment. Therefore, this type of rights is “collective rights”. It is noticeable that the right to clean or good environment is always used together with the right to development which is also one type of collective rights. It is regarded that protection of the right to good environment helps leading to efficiently respect and protect the right to development, which is suitable to less developed and developing countries willing to enhance the respect of the right to development. However, the right to good environment which is the positive right is still opposed by developed countries and not be accepted as human rights due to the lack of universality of being human rights. 3) Human rights and the environmental protection – Environmental protection is “prerequisite” in order to make the human rights protection: the right to environment or neighboring rights of environmental protection such as the right to life and the right to health, to be more completed. Therefore, whether countries accept the right to environment as human rights or not, it is no more necessary to make the right to environment as human rights. Using the environmental protection for enhancing the human rights is the best way. Any country effectively protecting environment will automatically protect human rights. 4) Procedural rights for environmental protection is important mechanism – It is the existing rights which help reaching the environmental protection in addition to the substantive rights and are explicitly written in most international documents relating to environment. Therefore, in protecting the environment, the procedural rights should not be neglected by States. Thailand should be enact a law related to procedural rights at domestic level. Issues Directly Relevant to Building Common Scholarly Understanding for the Sake of Further Study in the Next Step  Study on the way in writing the provisions on environmental protection in the constitution as the highest law of the land, since it is the pre-requisite for the State to do before protecting other types of human rights, and also because destruction of environment has impacts on many types of human rights. This should include study on enforcement of the right to environment in the countries that already guaranteed the right to environment through comparison between constitutions of various countries both developed and developing countries.  Study on connection among new types of rights and the existing rights in the constitutions and other legislations for facilitating effective law enforcement. The lack of this connection can create not only difficulty for enforcing the new rights but also conflict among various rights. 18