A simple tea bag.

Every year consumers use millions of them.

All of Unilever 's products, including tea bags, go on a journey before and after they 're enjoyed by our consumers.

We call this the value chain.

It works like this.

First, we get the raw materials.

Then we make them into a product and deliver it to a shop.

Then our consumers buy it, use it and eventually throw it away.

But each step in the value chain also has an impact on the environment.

Here at Unilever we want to reduce that impact and grow our business at the same time.

The value chain lets us see where our biggest impacts are so that we can focus our efforts.

So, for example, Unilever 's hundreds of factories only add up to three percent of our total greenhouse gas footprint.

Around 26 percent of our impact comes from suppliers when they produce raw materials.

And around 68 percent comes from the millions of consumers when they enjoy our products.

So, most of Unilever 's impacts aren't our problem, right? Wrong!

We want to reduce the impact of our products before they enter and after they have left our factories.

We work as a team with our suppliers, customers, other consumers to reduce the impact of our products.

We have ambitious plans to grow our business, but growth at any cost is not an option.

We want to work to help consumers enjoy our products and cut the environmental impact at the same time.

Every day thousands of suppliers help us make our products and two billion people use them.

The maths is pretty simple.

If we get ourselves each of our suppliers, customers and consumers to be a little more sustainable, these small actions will add up to a big difference.

A really, really big difference.