Theo Khelfoune Ferreras cared passionately about environmental issues and had recently been helping out Greenpeace as a fundraiser before his life tragically ended A teenager’s worries over climate change and environmental issues ultimately caused him to take his own life, according to his heartbroken sister. ‘Passionate activist’ Theo Khelfoune Ferreras, from Walthamstow, died on March 29, 2023, less than two months before his 20th birthday. Now his sister Lisa, 18, has spoken out about the troubles that were affecting her older brother, who recently became a Greenpeace fundraiser, and what led to him ending his life so abruptly. Lisa told...