 The question of what climate target to aim for will also depend on what responsibilities members of one generation have to future generations. The emission of some greenhouse gases can have an impact far into the future. For example, CO2 lasts in the atmosphere for “hundreds of thousands of years” (Allen, Dube, &amp; Solecki 2019: 64). So while climate change affects large numbers of people alive now, many of the impacts of climate change will fall on future generations. To know what temperature target is appropriate it is necessary, then, to have an account of our responsibilities to future generations and to know how much weight, if any, to attribute to their interests.