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With the world's population growing, there's more and more waste being produced each year. All this week Nel's been looking into the inventive solutions people have been coming up with to put what we throw away to good use.

Experts think that as much as half of all the food produced in the world ends up going to waste.

It's estimated between 30 and 50% of all the food produced in the world never even reaches a human stomach.

A report by the UK's Institution of Mechanical Engineers blamed food having strict use-by dates and consumers expecting fruit and vegetables to look a certain way.

With the world's population expected to keep growing some people are worried that there could be less food to go around.

Nel's been looking at why so much food is thrown away and what we can do to reduce waste.

Read Stefan Gates' tips on what to do with food you don't want to eat