Question: what is your favourite science experiment that you've done?
I have done lots of studies, tested lots of hypotheses using statistics but not really conducted experiments as part of work in the way you might think of them.
In high school (back in the 1980s…) there was a lot of concern about acid rain.
I entered a ‘science fair’ – not sure if they have them here. School children conduct studies or experiments, then write them up on posters and present to judges.
My parents let me grow loads of bean plants. They were in individual little pots and some plants got watered with water with neutral pH (7) and some with mildly acidic water and some with highly acidic water. Then I measured the plants as they grew to look for effects of acid rain. The effects weren’t nearly as dramatic as I’d hoped, but had a great time. And finishing off those posters was the first time I stayed up all night working (I was 14). I got an award for the best agriculture-related science project.