According to WHO estimates over 663 million people around the world have no access to clean water. This poses a severe health risk, especially to children. In Argentina, two social entrepreneurs are trying to improve the situation.

Commercial fishing fleets are emptying the world's seas. It's an ecological disaster that is also threatening the livelihoods of many small local fishermen. In the Philippines, local residents are fighting to preserve their fishing grounds.

The Peruvian city of Cusco is situated 3500 meters above sea level. Until recently, it stank to high heaven. Thanks to modern sewage management, its wastewater treatment facilities are environmentally friendly - and the stench has disappeared.

The Peruvian city of Cusco is situated 3500 meters above sea level. Until recently, it stank to high heaven. Thanks to modern sewage management, its wastewater treatment facilities are environmentally friendly - and the stench has disappeared.

Commercial fishing fleets are emptying the world's seas. It's an ecological disaster that is also threatening the livelihoods of many small local fishermen. In the Philippines, local residents are fighting to preserve their fishing grounds.

Commercial fishing fleets are emptying the world's seas. It's an ecological disaster that is also threatening the livelihoods of many small local fishermen. In the Philippines, local residents are fighting to preserve their fishing grounds.

Small mobile kiosks in Rwanda that produce solar power are helping to create jobs and protect the environment. 600 of these kiosks are expected to be in operation by the end of 2017. People use them to charge their cellphones and more.

Only 4% of Jordan can be used for agriculture. The rest is desert – and it’s growing. Reporter Mabel Gundlach visited projects aimed at preserving the country’s biodiversity.

In India a hypothermia monitoring device in bracelet form protects preterm and low-weight newborns – and reduces child mortality rates.

Only 4 percent of Jordan can be used for agriculture. The rest is desert - and it's growing. Reporter Mabel Gundlach visited projects aimed at preserving the country's biodiversity.