Last Word
What makes the slipperiness of slides vary so much from day to day?
Regulars
Last word
91av's popular Last Word series gives readers the opportunity to answer each other's questions about everyday science phenomena, from the shape of scones to the evolutionary history of toenails. To answer a question or ask a new one, email lastword@newscientist.com
Issue no. 3390 published 11 June 2022
