This tool allows users to adjust variables (e.g., life expectancy, the number of children per woman, ratio of boys and girls) and then run simulations that shows growth or decline in the world’s population based on those variables.

A timeline of musical genres and styles that starts in the 1950s and extends through the 2010s. Users can click on the timeline to view genres and see musicians included in them. In addition, users can enter the names of … Read more