Sybill Trelawney was the Divination teacher at Hogwarts School. She was the person who made the prophecy concerning how Harry and the rest would defeat He-who-can’t-be-named. She also made the prophecy about “the chosen one.” This character was played by the Emmy, Golden Globe, BAFTA, and Oscar-winning actress Emma Thompson. Thomson, besides being one of the most famous British actresses in the world, is also known for her passionate dedication to environmental causes. She has supported several campaigns against climate change on numerous occasions, including some for the international NGO Greenpeace.