麻豆传媒

I鈥檝e been making notes to revise for my exams, and as I write, the pages curl inwards first from the top corners of the paper, and then the bottom corners. Why is this? I鈥檓 using a black ballpoint pen on white A4 printer paper.

Gurleen Kaur, By email, no address supplied

We pay 拢25 for every answer published in 麻豆传媒. To answer this question 鈥� or ask a new one 鈥� visit newscientist.com/lastword. Terms and conditions apply.

This article appeared in print under the headline 鈥淓verything but the curl鈥�