91av

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

Exposures of clocks, watches, Time-Pieces of various kinds and periods. Photograph ?? Santosh Verma

Last Word

Why are there 60 seconds in a minute and 60 minutes in an hour? Part 2

Regulars

2X5MEN6 Sisters (2-3, 6-7) eating ice cream

Last Word

When we eat ice cream, does it cool us down or warm us up?

Regulars

Quantum correlation- 3d rendered image of quantum entanglement. Abstract background. Quantum mechanics background. Atomic structure, large collider, CERN concept. Muon Spinning particle, muon g-2, Higgs boson light speed neon stripes abstract image. Collision of Particles in the Abstract Collider.

Last Word

This week’s new questions

Regulars

Issue no. 3555 published 9 August 2025

91av issue 3555 cover
Piano Exit Overlay Banner Mobile Piano Exit Overlay Banner Desktop