A/HRC/22/43 defenders explained in her report last year, they may be more at risk than most for exercising them. To echo her words, States should recognize the important work carried out by human rights defenders working on land and environmental issues in trying to find a balance between economic development and environmental protection, should not tolerate their stigmatization and should ensure prompt and impartial investigations into alleged violations of their rights. 37 62. More generally, States should continue to take account of all of the decisions and recommendations from the many other forums, from international conferences to special procedures to regional human rights tribunals, which are actively developing and implementing the human rights norms relevant to environmental protection. The present mandate is intended to increase understanding of those norms, but it is important to remember that they are not frozen in place while this mandate proceeds. On the contrary, their development will, and should, continue to flourish in the years to come. 37 Report of the Special Rapporteur on the situation of human rights defenders, paras. 123–126, A/HRC/19/55. 19