According to recent reports, TikTok’s carbon footprint might outpace that of the entire country of Greece. Estimates from Greenly, a carbon accounting consultancy based in Paris, show the average TikTok user generating greenhouse gases equivalent to driving an extra 123 miles in a gasoline-powered car each year.

Those figures are more than X (formerly Twitter) and Instagram, although both platforms have a significantly larger user base. With its one billion global users, the average TikToker spends 45.5 minutes scrolling, compared to Instagram’s 30.6 minutes a day.

And why is TikTok responsible for such a heavy carbon footprint? It’s all about the addictive algorithm, according to Alexis Normand, the chief executive of Greenly.