Mamie and Kenneth Clark's work in psychology was instrumental in the fight to ban racial segregation in US schools. For Valentine's Day, Elena and Ian tell the story of one of their favourite scientific couples. If you liked this episode, subscribing/following means you'll get the next one automatically. We'd love it if you could leave us a review on iTunes too. And if you want to get in touch with us, you can do that at wondercupboard.com.