The Mara River that runs through Tanzania and Kenya is used as a significant resource by 1.1 million people throughout the surrounding communities. For years, artisanal miners have also used the river to clean their gold, but this has polluted the river and increase chances of mercury poisoning. One community has created a gold refining pond to simultaneously continue promoting the importance of washing the gold as well as keep the pollutants out of the Mara River.

Water was scarce in the Moroccan Ait Baamrane tribal region, which meant women and children often had to travel great distances to fetch water from wells. A new technology that harvests water from fog, however, has changed their way of life by generating enough clean drinking water for the entire region.

Due in part to an outdated infrastructure, Newark's storm sewers get overwhelmed with litter, oil and other materials that end up impacting the cleanliness of the community's drinking water. To combat this issue, a group of passionate community members formed Doing Infrastructure Green (DIG) to help bring education to residents about sustainable solutions around the water supply.

Kenya's female water tank masons are delivering measurable benefits to their communities and empowering other women to take up leadership roles.

Around the globe, countries have taken actions that have helped reduce carbon emissions and increase the use of renewable energy. Although the state of Florida feels the effects of climate change, its state representatives have not produced policy addressing it. Local policy makers and organizers have made the biggest difference in the state.

As water shortages continue to be on the rise, so are water expenses. El Paso, Texas is more familiar with this than many other cities due to it's serious lack of rainfall and historically rapid consumption of water. The city's newest approach, however, utilizes a closed-loop water system that cleans and recycles sewage water, making it ready for public consumption.

After discovering that raw sewage was flowing into Nova Scotia's LaHave River at alarming rates, an 11-year-old in the community decided study the issue for her science project. After testing the levels of the water and relating the cause of the issue to a certain type of sewage system, she publicized the results through social media, prompting the community to organize around change.

The Kuttemperoor river in Alappuzha district of Kerala, India was once treated as a source for water and food stability. After years of illegal sand mining and construction sites dumping sewage, the river was unrecognizable to those that had once known its clean shores. As water scarcity became a reality for the small village of Budhanoor, and government action seemed unlikely, a group of 700 villagers - mostly women - banded together and spent 70 days physically de-silting and revitalizing the 12-kilometer long river.

In many rural communities in India, access to clean drinking water is still scarce. The cost of bottled water is prohibitive, city pipes are in poor condition, and the municipal tanker trucks that supply some water are haphazard. But a social business called Sarvajal is busy scaling up a solution: a water ATM. These machines allow people to scan a pre-paid card and withdraw purified water from a stable, convenient source within their community when needed.

Though once the rivers were afoul with pollution and the carcasses of poisoned fish and the water from taps was too hazardous to drink, Denmark now boasts some of the world's cleanest drinking water and some of it's most comprehensive programs for good water management. The Danish government is looking to help other nations replicate their success, leveraging technology and collaboration to better manage water treatment and conservation for all.

The supply chain for Valentine's Day flowers is incredibly toxic for the environment and produces mass amounts of waste. In response, a "floral gifting" service industry emerged in which flowers from special events can get repurposed or recycled. One such company, NYC-based Repeat Roses, has a special service that restyles the flowers into petite bouquets to donate to hospitals, nursing homes, and family shelters. Their efforts have diverted more than 98 tons of waste from landfills and delivered almost 53,000 floral arrangements to people in need.

Drought in Madagascar grows worse each year as its minimal public infrastructure and extensive poverty slow efforts by the UN and various NGOs for food and water distribution. But in recognizing the severity of the cyclical water shortages, organizations are piloting new approaches. These include solar pumps from portable groundwater sources; distribution and cultivation of drought- and rot-resistant seed strains for staple crops; cash-stipends for "productive goods," delivered by phone to bypass the problem of damaged roads -- which are building newfound resilience among residents.

As demand soars and climate change routinely throws cities into shortage crises, the availability of clean water is one of the most pressing challenges of the present and near future. Desalination has long been lambasted for being too expensive and polluting, but a new solar-powered prototype is putting forth a more sustainable, small-scale solution. Solar collectors boil water and then condense it separately from the brine and dirt so that it is drinkable.

Starting small helped Chennai, India achieve big results when faced with looming water shortages. A local community member embarked on a campaign to not just conserve rainwater but to teach his community the importance of this practice.

Detroit has a water affordability problem, with 100,000 water shutoffs for non-payment recorded since 2014. When faced with a similar problem, Philadelphia implemented an income tier-based water affordability program. Despite challenges, some think this is a solution to be tested in Detroit.

The Flint crisis displayed the deficiency of knowledge by medical doctors to environmental health concerns. In response, the national medical community is bringing more awarenesses and education to current and future doctors about the importance of long-term effects of the environment on health. More research in this area is necessary as well as more classes in medical schools. Universities across the U.S. are now developing such courses to change the future of patient care and crisis prevention.

Israel experienced extreme drought a few years ago and its water supply was very low. National campaigns to install desalination plants have helped Israel turnaround its inadequate water supply into a surplus. The water scientists who have helped make this surplus see an opportunity for water diplomacy and the de-politicization of water in the Middle East so that more of it can be shared with other geographies.

Despite a lack of support from the current White House administration to move forward with climate conscious decision making, organizations and local governments across the world are mobilizing to enact change. From satellites that can measure methane and carbon dioxide concentrations to clean energy startups, people are working together to contribute to the the fight.

When large-scale hog farms began moving into rural Iowa, many local families were forced to start making decisions about their ways of life, especially concerning their own farms and health. To fight back, the community gathered together to create a covenant. Although small in scale, other communities in the state have reached out in hopes of following their so-far successful approach.

San Pedro La Laguna, a town in Guatemala, has banned single use plastics including plastic bags and straws after realizing that plastic pollution was ruining the ecosystem of Lake Atitlan and that a new waste facility would be unable to handle the amount of garbage created in the village. To ensure that people follow the new regulation, there are heavy fees - but the town also bought traditionally made biodegradable replacements; the change is being framed as a way to return to traditional, indigenous ways for the communities.

Armed with data, local activists are taking on environmental justice campaigns. In the absence of action on the part of the Federal Government, local organizations in Mississippi and across the South are working to increase transparency, generate data on public health issues, and mobilize action on climate change.

Evidence continues to build that humans are contributing to a climate change issue that is nothing but bad news for the planet. Hopeful stories from seven countries, including India, Indonesia, and China, show that efforts to combat climate change might finally be working.

Scientists and activists in India are training citizens to collect information on water issues like contamination — and upload it so it can be used to push for change.

The Flint lead crisis has made us think of tainted water as an urban problem, aging pipes slowly poisoning the children of poor communities - but a huge amount of America’s substandard drinking water is actually consumed in all but invisible rural areas. An arsenic-poisoned community in California becomes the test case for a new legal idea: the 'human right to water.'

With little access to clean water, the community in the Nebbi District in Uganda were facing health issues. A new government initiative, however, has changed this reality by implementing a water scheme that utilizes technology to trap water and transport it closer to the community.

Monitoring usage incentivizes water-intensive companies to develop water-saving techniques. Boston-based nonprofit, CERES, helps companies like Pepsi and Levi’s develop more sustainable practices. For example, Pepsi recaptures more of its runoff and has replaced water with pressurized air in its cleaning process. Levi’s also replaced water with air, using ozone gas to treat its denim. Tracking and reducing water use improves efficiency and saves the companies money.

The Chicago River, once a place that tourists and locals alike would avoid, is now thriving after over 15 years of redevelopment efforts. Richard M. Daley, mayor at the time, enlisted the help of a Chicago architect to make the riverfront a more inviting place to spend time. That work has paid off. Now, in addition to being a location for boat commerce, the riverfront provides an inviting space for anyone who wants to meet for walks, drinks, food, or outdoor activities.

Turning sewage sludge into usable biogas helps make wastewater treatment more efficient. A water treatment plant in the city of Medina, Ohio, produces net energy from sludge. The plant uses anaerobic bacteria and a thermal hydrolysis process to convert wastewater and sludge into usable byproducts, like biogas.

Clean water and healthy ecosystems are becoming increasingly difficult to come by. With floating islands and other inventions, eco-entrepreneur Bruce Kania thinks that biomimicry - such as reconstructing wetlands and growing biofilms - can tackle the toughest of water problems.