Pedal power: How bicycles can change lives

In combatting poverty, a giant informal economic system has quietly emerged in Africa. Women participate in micro-finance organizations that loan money in order to allow them to create businesses and become self-managing.

Many subprime borrowers in the United States are financially unable to buy a home themselves. An unconventional lender is trying to make it easier for low-income people to buy houses despite the tighter requirements that other lenders adopted after the mortgage bust.

A overview of 2014's Fixes columns - connecting the dots between 60 or so ways that people are trying to change the world.

Farmers in Vietnam face rising sea levels but rejected the city's water engineering projects. They prefer gradual measures to cope with climate change so scientists have allowed the farmers to steer the conversation.

Louisiana and Vietnam both need affordable solutions to rising sea levels. Leaders from Vietnam visited Louisiana to compare ideas.

Most insurance companies avoid insuring poor farmers because the transaction costs are too high, but a non-profit in Kenya created a sustainable way to cover them.

Poor people are less likely to make smart financial decisions; however, new research in the U.S. says this is not about intelligence but rather about a brain being overwhelmed with issues related to poverty. To combat that barrier of stress, organizations around the world are making financial decisions easier for people experiencing poverty by making borrowing easier and automating future financial planning, like 401(k) contributions.

The non-profit Root Capital created a lending initiative in Mexico which helps mid-size rural farmers gain access to capital, skills, and consumer markets from which they would otherwise be excluded.

Ecological toilets that use natural composting to break down waste are simple to construct, waterless and are easy to fix. But as philanthropists are finding, getting these to those that need it most is harder than anticipated.

54 million people in the United States, and 4.5 billion globally, have no credit to their name - making it nearly impossible for them to buy homes, apply for jobs and receive loans. Investors and lenders make an effort to help those with 'invisible credit' scores in financing essentials like homes or cars.