A big part of why I enjoy it so much is the presenter, Roland Pease. He consistently explains things in a way that's easy to understand, while still being accurate. The interviewees are experts in their fields and almost always respond with 'exactly!' after Roland has summarised an aspect of their research. Some quotes from others mirror my feelings:
Women scientists make up a healthy proportion of guests. If I had to guess, based on listening for a couple of years, I'd say that 50% of interviewees are women. I don't know the percentage of women working in science, but with great role models presenting their subjects on global radio, I'm hopeful young women will be inspired and we'll reach equality someday soon.
Science and scientists have a tough time in a hyper-critical, instant news world. People demand certainties and mistakes are amplified more loudly than successes. Balanced and incisive reporting like Science in Action is hard to find. I hope the BBC keeps the show running for many years to come.