[Jouni K Seppänen]

Jouni K Seppänen  asked the Naked Scientists:
   
Hello -

When I am travelling by aeroplane, it usually means that I have woken
up early and am quite tired. However, I find it difficult to fall
asleep on the plane... except when it is just about to land. Is there
something about the increasing air pressure that could cause me to
doze off?

Thanks,
Jouni Seppänen from Finland

What do you think?