“Climate change is the single biggest health threat facing humanity.” – World Health Organization, 2021   The Silent Amplifier of Every Health Crisis Public health professionals have spent decades battling epidemics, slashing infant mortality, and closing equity gaps. Today, climate change  - driven by human-caused greenhouse gas emissions - is the invisible multiplier , making every challenge harder, deadlier, and more expensive , worldwide. With just 1.1°C (2 degrees F) of