Daily briefing: The countries where scientists are most likely to work through the holidays

Nature, Published online: 19 December 2019; doi:10.1038/d41586-019-03927-0

Scientists in Belgium, Japan and the United States are submitting when the rest of us are kipping. Plus: Finally! A solution (of sorts) to the three-body problem, and the conference that brings all the fun of science Twitter into the real world.