Nisreen Elsaim ni mwanaharakati kijana na mzungumzaji wa hali ya hewa kutoka Sudan. Yuko kwenye Kikundi cha UN cha Vijana cha Ushauri juu ya Mabadiliko ya Tabianchi (UN's Youth Advisory Group on Climate Change) baada ya kuteuliwa na Jumuiya ya Haki ya Hali ya Hewa ya Pan African (Pan African Climate Justice Alliance). Elsaim ni rais wa Vijana wa Sudan kwa Mabadiliko ya Tabianchi (Sudan Youth for Climate Change). Alikuwa mratibu wa Mkutano wa Vijana wa Hali ya Hewa (Youth Climate Summit) wa 2019. Elsaim ana shahada ya Fizikia na Nishati mbadala kutoka Chuo Kikuu cha Khartoum. Amekuwa akishiriki kikamilifu katika harakati za vijana za hali ya hewa tangu 2012. Blazhevska, Vesna. Young leaders tapped to invigorate UN’s climate action plans, hold leaders to account (en-US). Sudanese Appointed Chairperson Of UN Advisory Group| Sudanow Magazine. #YouthParticipation: Nisreen Elsaim, on her journey to becoming a UN Youth Climate (en). JWH Initiative. Blazhevska, Vesna. Young leaders tapped to invigorate UN’s climate action plans, hold leaders to account (en-US).