This group wants to unite hikers and hunters on literal common ground: public lands

Boston had a hard time solving civic problems efficiently and holding its leadership accountable. In response, a team in the Mayor's office was charged with "making Boston better through clever, low-cost hacks" such as a mobile app that allows residents to send government service requests to City Hall.

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.

Very few people go to city council meetings. MindMixer, a tech startup company, increased civic participation in states across the U.S. with online platforms for city officials and the community to discuss ideas.

The World Conservation Union estimates that 40 percent of the more than 40,000 species it tracks on its Red List are close to extinction and this problem requires humans to change their behavior to fix it. Rare’s the Pride Campaign uses social marketing to attract attention and communicate the conservation message between local communities and government entities. The Pride Campaign has been replicated around the world for different conservation efforts to protect biodiversity.

In Colombia, traditional cattle pastures have caused soil degradation, deforestation, and desertification. To reconcile this, several thousand acres of land in Latin America have been transformed into a silvo-pastoral system of grazing and raising cattle with agro-forestry. The Colombia-based Center for Research in Sustainable Systems of Agriculture seeks to reduce pasture land by 26 million acres while increasing cattle numbers by 2019.

Hawaii private school students were taught about ecological sustainability, but public school students were not. After losing a school essay contest about sustainability, a high school student convinced Hawaii’s legislature to pass a resolution requiring that every student learn the meaning of the concept. Due to this student’s advocacy, the state is also piloting a program to install solar panels on its public schools to teach children how to be more self-sustaining.

Native American student graduation rates are much lower than that of any other demographic. The Red Cloud school teaches students on a reservation in South Dakota about the Lakota history to empower the kids and encourage resilience.

Global social and economic problems are difficult to change. However, fan-activism fuels the interests of fans of popular young adult fiction. Books such as Harry Potter and the Hunger Games have inspired activist groups that raise awareness of global hunger, reading, and relief supplies to impoverished nations, among others. Being a fan has served as a bridge to become politically active and solve the world’s problems.

Officials in Niger are addressing chronic severe droughts causing food shortages and leading to a widespread threat of starvation. They provide aid to malnourished children and resources for a crop planting technique called 're-greening,' which aims to reforest agricultural regions, restore soil quality and, in turn, increase food supply.