Around the world, a massive one trillion plastic bags are used every single year. And then there are all the plastic bottles, plastic packaging and other one-use plastic products that end up in landfill on earth and floating in our seas. The problem is overwhelmingly huge, but it's one that we can all do something about.

In Rotterdam, one project is scooping up plastic from the city's river and turning it into a floating green park to improve the area's biodiversity.

The Print Your City Project is transforming the city of Amsterdam by 3D printing urban furniture from plastic waste.

In poor countries, housing shortages, a lack of building materials, and an abundance of plastic waste, often go hand in hand. By turning waste into building materials, a Colombian start-up is killing two birds with a stone.

A new company has its eyes set on the world's roads. Through their 'magic formula', they want to minimise not just the environmental impacts of road building and maintenance, but also help reduce the plastic waste issue and, while they're at it, ensure that tax payers' money goes the extra mile. How do they do it?

We all know that there's a problem. And the solution, unfortunately, isn't going to be all that simple. But now there is hope! The huge amounts of plastic waste floating in the world's oceans is one of the most pressing evironmental challenges of this century. But now there's a new technology which takes that waste and turns it into something new, in an eco-friendly, low-emission and non-toxic way.

They may be colourful, they may be bright, but flip-flops at the end of their life-cycle are no longer a pretty sight. Much like other forms of waste, whether discarded or lost, they pollute our oceans, contaminate sealife and land on beaches. What to do? Simple, upcycle them and turn them into a source of income.

Some fish and birds may get caught in it, others may choke on it. Our oceans are so full of the stuff that masses of it, equivalent to the size of countries, are found floating around. Plastic waste continues to blight and threaten marine ecosystems, but with its edible six pack rings, this small brewery is having no part in it.

An innovative Indian company has come up with a brand new way of cutting back on plastic waste: crunchy and tasty cutlery that's good enough to eat.