A touch of moss

A history of botany and colonialism touched off by a moss bed. Moss likes to grow everywhere, so long as there's enough shade and moisture. In the city, it could be considered a nuisance at worst and harmless at best. But Nikita Arora, a doctoral candidate in the history of science, medicine and technology at the University of Oxford, explains the tiny plant's fascinating qualities and how she discovered its multi-textured world.