Healthy communities rely on well-functioning ecosystems. They provide clean air, fresh water, medicines and food security. They also limit disease and stabilize the climate. But biodiversity loss is happening at unprecedented rates, impacting human health worldwide, according to a new state of knowledge review of the Convention on Biological Diversity (CBD) and World Health Organization (WHO). The report, Connecting Global Priorities: Biodiversity and Human Health, launched in Brussels at Green Week 2015, Europe’s biggest annual conference on environmental policy, focuses on the complex and multi-faceted connections between biodiversity and human health, and how the loss of biodiversity and corresponding ecosystem services may negatively influence health. One of the first integrative reviews of its kind, the report brings together knowledge from several scientific disciplines, including public health, conservation, agriculture, epidemiology and development.