Climate change, water scarcity, pollution and unsustainable land use change pose great challenges to rivers and all those who rely on them. The inability to access clean water threatens the security, stability, and environmental sustainability of all nations, particularly in the Global South.By engaging in collaborative transboundary water management, nations can collectively address the many challenges which rivers face [including pollution, unsustainable land use change and climate change impacts]. It allows for the equitable allocation of water resources along the whole course of the river, ensuring that everyone has access to clean water for drinking, agriculture, and industrial purposes.From source to sea, arteries.blue tells data-driven river stories. The project uses a mix of interactive data, graphics, articles from academic researchers and photostories from journalists to communicate the challenges, opportunities, and beauty of some of Earth’s most vital lifelines.