By 2050, two-thirds of the world's population will live in cities.

By then, a tropical forest the size of India will be destroyed.

But one organization hopes to inspire people to care more about the world's plants.

It's a project that sets out to connect people with plants because it's... viewed that people have very little connection with plants throughout most of their lives.

The project has three biomes.

One houses the world's largest indoor rainforest.

Together, they hold over 3,000 plant species.

But education matters as much as the plants here.

If Eden has one particular skill,

it's about storytelling, and it's bringing to life stories that are quite difficult to understand, and could be quite dry.

The site has one million visitors annually.

Now, the organization is expanding.

We're working on seven or eight active sites at the moment.

We hope to have a site on at least every inhabited continent of the world because it's all very well having reached 18, 19 million people here.

But actually, if your mission is connecting people to the living world, you can only really do that on a global scale.

We've got three sites going in China.

The principal one is in Qingdao, China.

We're hoping to open, basically, in August 2020.

The original Eden Project was built on an abandoned clay quarry.

It's specifically happening in Cornwall because Cornwall was right for improvements.

There was quite a bit of poverty, quite a bit of land available for use, and the tourist industry that perhaps was not doing as well as it could have.

So there was a fantastic opportunity to reclaim it and turn it into a showcase for plants.

Each future site will aim to overhaul locations in a similar way.

The Qingdao site is at the end of its useful life, so it's been used for prawn breeding.

It's had salt panning there, so it's got a real need to regenerate that site

Eden doesn't do small.

As you can see around us, we are an ambitious organization, and we think that actually, we can create a sisterhood, a federation, if you like, of projects that share some of the content that they each have their unique component.

The Eden Project isn't alone.

There's growing number of groups working to raise awareness.

It's incredible that many people will go through their whole lives right next to plants, and have no knowledge about them at all.

If we can demonstrate our connection better to people, it will become much easier to deal with big, significant issues like water, like climate change, and air pollution.

It would be great to believe that actually, our mission has succeeded.

We connected people to the natural world, and we won't need it.

But I think we're a little away of that.