We've been hearing that a lot lately.

But what does it really mean?

All these words and numbers can feel overwhelming.

So, here are three key terms to help.

Let's start with

net zero.

That means the carbon we put in

is the same as the carbon we take out.

Leaving us with... zero.

And another phrase:

circular economy.

That means instead of

making, using, then throwing away

we make, use, and reuse

making it... circular.

Which brings us round to another important number

1.5

Scientists say a rise of over 1.5 degrees

will cause an environmental catastrophe.

But scientists also tell us it's not too late.

We can use renewables

reduce emissions

and change our diets.

This will need money

and action, from people, businesses and governments.

So, can a circular economy

help us get to net zero

and limit the rise to 1.5 degrees?

The clock is ticking.