The apps fighting food waste by saving restaurant meals from the trash

Consumers get the chance to buy leftover meals, expiring or misshapen food at discount prices, and aim to encourage consumers to effect policy change in their communities

If food waste were a country, it would be the third-highest greenhouse-gas emitting nation behind the US and China. That's because 40% of all food grown in the world goes uneaten each year, according to a World Wildlife Fund report from last year. And when food ends up in landfills, it produces huge amounts of greenhouse gases.

So it's no surprise then that apps designed to combat food waste - by giving consumers the opportunity to purchase leftover, expiring or misshapen food at discount prices - have become increasingly popular in recent years. Some of these apps have millions of users in the US, and are growing internationally. TikTok users often post videos of the food they have salvaged from restaurants through the apps, and a Reddit community with more than 12,000 members shares photos of their hauls.