What on earth does this mean? (turn to powder)

[Alan]

Hi,

Headlines in a newspaper need to do two things: say something very briefly and also attract your attention. The trouble is they can be confusing and difficult to understand. What on earth does this mean?

MILK DRINKERS ARE TURNING TO POWDER

Alan
_________________
English as a Second Language
You can read my ESL story Phrasal Verbs/go

[Tamara]

Hi Alan

I’d suppose something like increased mass consumption of dried milk
_________________
It’s impossible to learn swimming without entering the water…

[Alan]

Hi Tamara,

Yes, absolutely. The problem could be that someone might think it means: people are becoming powder!

Alan
_________________
English as a Foreign Language
You can read my EFL story In Order

[Tamara]

Ahhhh…
That's funny, indeed.

(As I’m not advanced in English (and will never become native ), I can only catch the first direct meaning, as yet.)
_________________
It’s impossible to learn swimming without entering the water…

[Fan Of Arabian Horses]