As climate catastrophe marches apace and the nation's public health infrastructure continues to unravel, we take stock of how we got here and what it might be like to look back on this year in the future. Plus, the frightening encroachment of QAnon conspiracy theorists into mainstream politics.

1. David Roberts [@drvox], staff writer at Vox.com, on how "shifting baselines syndrome" clouds our perspective on climate chaos. Listen.

2. Sarah Kliff [@sarahkliff], investigative reporter at the New York Times, on the obstacles to effective sharing of health data, from politics to fax machines. Listen.

3. Anthea M. Hartig [@amhistdirector], director of the Smithsonian's National Museum of American History, on archivists' efforts to document 2020 in real time. Listen.

4. Alex Kaplan [@AlKapDC], senior researcher at Media Matters, on how fringe conspiracy theory QAnon rose to prominence and has consumed segments of the political right. Listen.