The first half of our lives are ruined by our parents and the second half by our children.

The complexity and range of Henry and Ezra's science experiments are increasing ten-fold. Here, you can see Henry taking a container of water highly enriched in the hydrogen isotope deuterium over to Ezra (out of shot), who has somehow managed to get his hands on some unenriched uranium (don't ask) and has a little scheme to reduce our electricity bills...