I think science is brilliant generally, but a single favourite part of it might be medical science in general. I’m asthmatic, and a hundred years ago that might have meant I was really limited in life by whether or not I could get proper breath – but these days there are great quality medications to prevent us getting wheezy, plus inhalers to fix your breathing if you do start getting wheezy or having an attack. I’ve had unpleasant attacks before so who knows if I’d have even gotten as old as I am now without the meds! Another great part of medical science is antibiotics. A cut getting infected could be a death sentence if you were unlucky, once. I’m so glad we have them!