A walk on the thoughtful “wild side” of why old-school epidemiology has over-promised and under-delivered, discovering that population density is more than how tightly we are packed, an alternative hypothesis for how sleep refreshes our bodies and spirits, and an update on a maligned energy source, fusion.
Where does the 2600 tons of oxygen we use daily in the hospitals come from? Not all creatures have a microbiome, what is up with that? Why are lies and misinformation so resilient? And two lessons from history, one about where we shelter, the other about "travel papers."