Happy "Summer" solstice

It is puzzling to me that in the US, that holdout of the Imperial system of measurement, schoolkids learn up to the ten times table only. When I was at school, I learned up to 12, even though the UK had been metric for a decade already. But apparently nobody…

Now on at the California Science Center! Closes April 29th, but the kids are back at school already so now's the ideal time to take a half-day off work and head over to South Central. What? You want photos? OK.

Inspired by 's Rubik cube antics, I picked one up myself last week. When I was a kid, the most I could do was one side. So this time I set about solving it properly. I'm not interested in solving it really quickly, just in being able to solve it….