Cookie notice | Our World in Data Our World in Data Browse by topic Data Latest Resources About Subscribe Donate Cookie notice 1. Introduction This Notice explains how Global Change Data Lab (“GCDL”, “we”, “our”, “us”) uses cookies and other tracking technologies through our website (https://ourworldindata.org). This should be read alongside our Privacy policy, which explains how we use personal data. You can choose not to accept certain cookies. If you have accepted but then decide to reject our use of cookies, please disable them following the guidance below. 2. What are cookies? Cookies are small files that are placed on your computer or mobile device by a website when you visit it. They contain details of your browsing history on that website and distinguish you from other users. Cookies send data back to the originating website on each subsequent visit. 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