Finally, the CESCR lists the following aspects with respect to realization of the right of everyone to enjoy the benefits of scientific progress: (a) Measures taken to ensure the application of scientific progress for the benefit of everyone, including measures aimed at the preservation of mankind’s natural heritage and at promoting a healthy and pure environment and information on the institutional infrastructures established for that purpose. (b) Measures taken to promote the diffusion of information on scientific progress. (c) Measures taken to prevent the use of scientific and technical progress for purposes which are contrary to the enjoyment of all human rights, including the rights to life, health, personal freedom, privacy and the like. (d) Any restrictions which are placed upon the exercise of this right, with details of the legal provisions prescribing such restrictions.381 10.1.2 Obligations of State Parties General Comment No. 21 on the “right of everyone to take part in cultural life” differentiates between four types of State obligations: 1. The “general legal obligations” include in particular “the immediate obligation to guarantee that the right set out in article 15, paragraph 1 (a), is exercised without discrimination, to recognize cultural practices and to refrain from interfering in their enjoyment and development.”382 2. The “specific legal obligations” are: “(a) the obligation to respect; (b) the obligation to protect; and (c) the obligation to fulfil:”383 a. “The obligation to respect requires States parties to refrain from interfering, directly or indirectly, with the enjoyment of the right to take part in cultural life.” b. “The obligation to protect requires States parties to take steps to prevent third parties from interfering in the right to take part in cultural life. “ c. “The obligation to fulfil requires States parties to take appropriate legislative, administrative, judicial, budgetary, promotional and other measures aimed at the full realization of the right enshrined in article 15, paragraph 1 (a), of the Covenant”384 3. The “core obligations” to “ensure the satisfaction of, at the very least, minimum essential levels of each of the rights set out in the Covenant.”385 Regarding the right to take part in cultural life, the core obligations include the obligations: a. “To take legislative and any other necessary steps to guarantee non-discrimination and gender equality in the enjoyment of the right of everyone to take part in cultural life”; 96