A great mix of topics, at a level that is a little higher than most science podcasts. Lots of shows about math, which I love! The presenter is very pleasant to listen to.
My only suggestion would be to check pronunciation of all foreign names, since many are tricky. Some examples I've heard: Fermat (should be 'Fer-mah', the 't' is silent), Gauss (rhymes with 'house'), Von Neumann (should be 'Von Noy-men'). Not a big deal, though!
Overall, though, this is a great series! Thank you!