The perfect shave

How to get the perfect shave

Lather up, grab a blade and whip it off. That’s all there is to shaving right? Wrong. Daniel Bennett discovers the science behind whisker trimming

In theory, could you drive an F1 car on the roof of a tunnel?

RONAN KELLEHER, CORK

The aerodynamic design uses air rushing past to exert a strong down force to stick the car to the track, improving its handling. The down force is greater than gravity. So in theory, you could drive the car through a tunnel and gradually steer it up the sides until you were motoring along the roof.

Submitted by Gareth Mitchell