Why are tree leaves so many different shades of (mainly) green? Howard Watkins, Goring-on-Thames, Oxfordshire, UK
Advertisement
Why does halloumi cheese 鈥渟queak鈥� against your teeth when you bite into it? I don鈥檛 know of any other food that does this, including other cheeses. Richard Jackson, Coldstream, Berwickshire, UK
To answer these questions 鈥� or ask a new one 鈥� email lastword@newscientist.com.
Questions should be scientific enquiries about everyday phenomena, and both questions and answers should be concise. We reserve the right to edit items for clarity and style. Please include a postal address, daytime telephone number and email address.
91色情片 retains total editorial control over the published content and reserves all rights to reuse question and answer material that has been submitted by readers in any medium or in any format.
You can also submit answers by post to: The Last Word, New Scientist, 25 Bedford Street, London WC2E 9ES.