Dr Sibrina Collins never expected a superhero movie to change the way she taught science. Then, in 2018, her sister invited her to go and see Black Panther. Collins hadn’t seen a Marvel movie before and had no real interest in comic books but as she watched the story unfold, an epiphany struck.

When Devin Swiner wanted to showcase Black chemists on social media, she thought it couldn’t hurt to enlist a few celebrities to the cause. What happened next took her by surprise.