We'll be taking a look at PFAS chemicals - what are they, and are they all harmful to health and the environment?
Sweden's 15-year olds performed poorly in Maths, according to results from the international assessment programme, PISA. A professor in Maths education joins us to discuss ways of improvement.
Also, solar power is on the rise in Sweden, and we meet one of this year's Nobel Prize laureates who are in town ahead of their big day on Sunday.
Presented by Dave Russell and Ulla Engberg.
Producer: Kris Boswell