Top consumer brands like Nestlé and Unilever are partnering on a new service called Loop that lets customers buy household items in innovative reusable containers and return them once they're finished. Here's how it works.

Around the world about a third of all food spoils before it's eaten. Apeel Sciences has developed a plant-based spray that can dramatically increase the shelf life of fruit and vegetables.

Across the globe, about a billion people are facing water scarcity. Could cloud seeding help? Weather Modification International uses planes to target clouds and draw out more precipitation.

With its innovative energy kites, the company Makani hopes to bring sustainable energy to millions of people along coastlines where traditional wind turbines can't be built.

Honeybees are essential for pollinating many crops but their populations are declining. Beeflow says its special nutrient-packed "superfood" formula can improve their performance and immune system.

Lanzatech uses a process quite like brewing beer to turn CO2 from steel plants into useful products.

Ecovative is growing alternatives to plastic out of mycelium, the root structure of mushrooms. The company says it can make building materials, packaging and potentially even foods that are sustainable and compostable.