A ban went into effect this week on athletes with high testosterone competing in women’s track events. South African runner Caster Semenya last week lost her challenge to a new rule by the International Association of Athletics Federations that keeps her out of women’s competitions because of her hormone levels. Many athletes have expressed opposition to the latest ruling, but we hear from a transgender runner who is happy with the ban. We also speak with the author of a graphic memoir trying to make sense of skin colour and identity; we hear about efforts in California to make police more sensitive to indigenous people; we visit a street in New Jersey City named in honour of an Indian human rights campaigner; and we hear the music of a self-described intergalactic feminist.

(Image: South Africa's Caster Semenya celebrates after winning the women's 800m during the IAAF Diamond League competition on May 3, 2019 in Doha. Credit: KARIM JAAFAR/AFP/Getty Images)