A new study published in Science reveals that over 50% of the world’s largest lakes are experiencing water loss due to climate change and unsustainable human consumption. However, the research provides hope by offering insights into lake water storage trends and their causes. By combining satellite observations and models, scientists can now provide valuable information to water managers and communities on how to safeguard vital water sources and regional ecosystems. The study’s comprehensive assessment highlights the urgency of incorporating human consumption, climate change, and sedimentation impacts into sustainable water resource management, with the aim of reducing large-scale declines in lake water storage.