Eco-anxiety in children and young people is a growing mental health concern linked to the climate and biodiversity crises. This paper explores how children and young people experience and think about eco-anxiety, highlighting the range of climate anxiety from mild to critical. It emphasizes the importance of understanding the emotional, cognitive, and relational aspects of this distress, which is often misperceived as a singular experience. The paper discusses individual, relational, collective, and planetary trauma, and considers the need for clinical practice that supports children and young people in navigating their distress while validating their emotional responses. The paper also notes a shift in how young people with eco-anxiety seek support, moving from seeking help with their anxiety to questioning how to live in a world that does not prioritize their future. This has led to increased anxiety about the people in power and the lack of action on climate change. Children and young people are increasingly feeling abandoned and betrayed by those in authority, leading to unresolvable despair. The paper presents an eco-anxiety scale ranging from mild to critical, reflecting the varying degrees of distress experienced by children and young people. It outlines the impact on daily functioning, thoughts, feelings, and defenses in each category. The scale highlights the need for a global or planetary perspective, recognizing cultural differences and the immediacy or distance of threats. The paper also discusses the concept of moral injury, where those responsible for protecting children are often the ones causing their distress. It emphasizes the need for a psychoeducational approach, reframing eco-anxiety as a sign of care and concern rather than a pathology. The paper concludes with a call for empathy, understanding, and support for children and young people in navigating the climate crisis, advocating for emotional biodiversity, emotional intelligence, and sustainable activism.Eco-anxiety in children and young people is a growing mental health concern linked to the climate and biodiversity crises. This paper explores how children and young people experience and think about eco-anxiety, highlighting the range of climate anxiety from mild to critical. It emphasizes the importance of understanding the emotional, cognitive, and relational aspects of this distress, which is often misperceived as a singular experience. The paper discusses individual, relational, collective, and planetary trauma, and considers the need for clinical practice that supports children and young people in navigating their distress while validating their emotional responses. The paper also notes a shift in how young people with eco-anxiety seek support, moving from seeking help with their anxiety to questioning how to live in a world that does not prioritize their future. This has led to increased anxiety about the people in power and the lack of action on climate change. Children and young people are increasingly feeling abandoned and betrayed by those in authority, leading to unresolvable despair. The paper presents an eco-anxiety scale ranging from mild to critical, reflecting the varying degrees of distress experienced by children and young people. It outlines the impact on daily functioning, thoughts, feelings, and defenses in each category. The scale highlights the need for a global or planetary perspective, recognizing cultural differences and the immediacy or distance of threats. The paper also discusses the concept of moral injury, where those responsible for protecting children are often the ones causing their distress. It emphasizes the need for a psychoeducational approach, reframing eco-anxiety as a sign of care and concern rather than a pathology. The paper concludes with a call for empathy, understanding, and support for children and young people in navigating the climate crisis, advocating for emotional biodiversity, emotional intelligence, and sustainable activism.