The primary risk identified is the potential for widespread biodiversity loss due to extreme heat events, which are becoming more frequent and severe due to climate change. Species with limited thermal tolerance or restricted habitats are particularly vulnerable. The study cites examples such as mass die-offs of birds, mammals, and marine life during recent heatwaves. These events not only threaten individual species but also disrupt entire ecosystems, leading to cascading effects on biodiversity and ecosystem services. Without timely intervention, the loss of biodiversity could have long-term ecological and economic consequences.