Question: I'm looking for an interactive tool to visualize and explore global population density and forest change data.

For visualizing and exploring global population density and forest change data, a few interactive tools are particularly useful. Earth Engine Apps offers a collection of interactive user interfaces, including the Global Population Explorer and Global Forest Change Explorer. These apps let you visualize and explore GHSL population density estimates for 2015 and Hansen et al.'s global forest change data in Earth Engine.

Another powerful option is CARTO, a cloud-native location intelligence platform. It lets you analyze, visualize and build applications with spatial data at scale. CARTO has a drag-and-drop interface, more than 100 pre-built components, and deep access to geospatial data through the Data Observatory, so it's a good tool for spatial analysis and decision-making.

Esri also offers a mature GIS mapping software foundation with powerful spatial analysis and location intelligence. It includes tools for 3D visualization, spatial analysis and real-time decision-making. Esri's technology is broadly applicable to many industries, including infrastructure planning and climate action, and can be deployed in the cloud or on premises.

For those who want a centralized data repository, Data Commons pools data from more than 193 countries and offers tools to explore demographic, economic and environmental data. With a map explorer and other interactive tools, you can drill down to visualize and analyze data in detail, drawing from sources like the World Health Organization and the United States Census Bureau.