Website upgradesYou can now view two maps showing different years side by side

You can now view two maps showing different years side by side

A useful way to look at change over time for an indicator is to view two maps showing different years side by side.

I recently upgraded our data visualization tool, the Grapher, to be able to do this!

To view two maps, just click on the timeline at the bottom to add a second time handle. You can then drag that handle left and right on the timeline to change the years shown.

To go back to a single map, you can either drag one handle back onto the other, or click “Reset view” at the top (only available on larger screens).

Try it out yourself
Two world maps showing data on life expectancy, one map for the year 1940 and one for 2023. Data sources include Riley (2005), Zijdeman et al (2015), Human Mortality Database (2025), and the UN World Population Prospects (2024). The chart is licensed CC BY to Our World in Data