Los retos de las ‘apps' antidesperdicio más allá de rescatar comida

Phone lines in Africa and South Asia would never have gotten to the poor - but these places have leapfrogged over last-century technology and gone straight to mobile phones. Now the same thing is happening with off-grid solar power: the fastest -- perhaps the only – way to power the poor.

The mobile phone is doing more than revolutionizing communication. It has the potential to improve many aspects of life in poor countries: commerce, health, agriculture, education - public health, especially, is being revolutionized by governments taking advantage of the mobile revolution by texting advice or sending voice messages to pregnant women, texting reminders to AIDS patients to take their meds, tracking the spread of diseases, allowing community health workers to keep records electronically and variations on all these themes.

The 2008 recession’s job losses spurred a development of a Do-It-Yourself economy. With the advent of Uber, Etsy, Airbnb, and others, the marketplace has become full of micro-entrepreneurs who thrive with independent web-assisted businesses.

In war zones, people have a difficult time finding clean water and safe areas to inhabit. Social media, smart phones, and technology applications are aiding in people’s survival. In Aleppo, Syria, the International Committee of the Red Cross posted a map on Facebook to show alternative sources of clean drinking water that reached approximately 140,000 people.

To decrease the nation's food waste, activists in Denmark showed the people that it was safe to buy and consume items that were very recently expired. From live demonstrations where celebrity chef features expired items in the entrees to reducing prices for out-of-date items, "Danes now throw away 25 percent less food than they did five years ago."

Crop production is very high in Tanzania but the farmers have no way of storing crops so most produce goes bad. Researchers are beginning to create storage systems that allow for produce to last longer and help farmers create a greater product and income.

One program has found a way to turn feces into agricultural compost, which has helped Haiti, a country with limited sanitation systems, both keep its water clean and grow food.

Most people are unaware of how much food they waste. Food waste campaigns across the world are using creative marketing to raise awareness and encourage behavior change.

An average of 28,000 children born in the U.S. each year die before their first birthday – and many more face disabilities and serious life-long health problems, often because they are born prematurely or at low birth weights. A free service, text4baby, delivers crucial health advice via text message to pregnant women and new mothers.

The amount of plastic debris in our oceans and water sources - especially nanoplastics that are increasingly prevalent in our food chain - is so enormous it's often beyond comprehension, and immensely difficult to address. As countries continue to industrialize and single-use products become more commonplace, the flow of harmful plastics into the environment seems insurmountable. But a number of clever inventions and dedicated individuals are working to help get plastics out of our water - and more importantly - encourage practices to reduce, reuse, and recycle.