
Last Word
Could a mountain as high as Mars’s Olympus Mons be possible on Earth?
Regulars
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. 3442 published 10 June 2023