We live in a world plagued by poverty and widespread hunger, yet about 30% of all food produced ends up wasted. A lot of that waste tends to come from industrialized nations, where food isn't exactly a scarce resource. 

5. Buy food that's headed for the landfill.

Too Good To Go is an app that allows you to purchase meals that are going to get thrown out by restaurants for $2-5 each. Unfortunately, right now the app is only available in Europe (where 500 restaurants have come on board), but it should be headed to New York City soon.

4. Make your food last longer.

We've covered it here before, and LettUs Grow should definitely be on your radar. It's a small LED chamber that lets you grow salad ingredients at home and keeps them fresh for far longer than your fridge would. 

3. Donate your lunch.

Have you heard of Feedie? For every photo you upload (at participating restaurants), Feedie donates a meal to a South African child. Quite a few apps, including Feedie and FoodShareFilter aim to turn your love of Instagramming lunches into tangible social good.

2. It's the internet of things and you need a smart compost pile.

Composting is an easy way to recycle your food scraps. Now, thanks to the ubiquity of smartphones, you can even monitor your compost pile using an app like Home Composting. One city is even setting up a dedicated waste management app for its citizens.

1. Dig around a dumpster.

If you're bold enough, maybe it's time to consider becoming a freegan and sourcing all of your meals from the local Trader Joe's dumpster after closing time. If you're not quite ready for that, PareUp is an app that lets you buy up leftover baked goods that are headed to the dumpster anyway. May as well cut the middleman out.