What do you want to know about the world's growing population? Ask our experts

This week, the world's population is set to tick over a historic milestone — 8 billion people.

But in the next century, society will be reshaped dramatically — and soon we'll hit a decline we'll never reverse.

If you have a question about the world's growing population, now is your chance to ask the experts. 

At 12:00pm (AEDT), the ABC's data analyst Casey Briggs and ANU demographer Dr Liz Allen will unpack what it all means, and what the future could look like.

You can ask a question or share your story with us using the form below and we will put them to our panel.

If your submission has been picked, we will feature it in our live blog with your first name and state submitted. You might want to de-identify the characters in your submission for this reason.

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