Friction Pooja Kenjale-Umrani whose presence is welcomed (if

whose presence is welcomed (if sometimes shyly) into these intimate rooms

When Ebun gives birth to her daughter

luxuriating in love letters written to your beloved murderess

is attempting to flee his imperious mother and the violence of his warring clan

feel compelled to issue correctives

Friction Pooja Kenjale-Umrani whose presence is welcomed (ifBy: Jennifer R. Vail, Senior Manager of Global Applications Jennifer R Vail Published by Harvard University Press, 2026 01 13 Friction, the force that resists motion, has shaped technological progress for millennia. Jennifer Vail shows how the quest to master friction has driven innovation, culture, and even human evolution. Now, scientists are learning that friction influences the course of disease and may be key to solving the climate crisis.