For non-fiction, Graeber and Wengrow's The Dawn of Everything (which I'm still working through the references of as well, many of which are also good). For fiction, my sample size this year is sadly small but probably Becky Chambers's The Galaxy, and the Ground Within, the final(?) book in the Wayfarers (The Long Way to a Small, Angry Planet) series. A great end to the series, and given that it must have been plotted originally pre-2020 oddly contemporary.
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