In Greece a non-profit initiative is taking action to fight food waste. Since 2011 they have collected 20 millions portions of food, which they hand over to charitable organizations. It's a win-win situation.

In Dghoumes National Park in southern Tunisia, conservationists are reintroducing animals which had almost disappeared like buzzards, gazelles and ostriches to the area after extensive reforestation efforts.

Tamino Kifungu is a young innovator who wants to solve Tanzania's energy problem with renewables. He is part of a group of self-taught engineers that are designing windmills generating electricity and pumping water.

Benin vet Michel Babadjide’s sustainable animal husbandry ensures food security for local farmers. It’s finally being taken seriously by science and catching on in villages around the country.

Ape Action Africa in Cameroon is one of the largest conservation projects of its kind in Africa, tending to more than 300 animals. It rescues injured apes, eventually reintroducing them into safe environments.

Water is precious in one of Morocco’s driest regions. But technology helps boost the area’s water supply by using a net to harvest the fog – one of its few water assets. Its success has now brought the tech to Tanzania.

Widespread hunting in Nigeria has seen the country’s animal population continue to fall. With no effective laws against animal abuse and trade, Chinedu Mogbo is trying to combat it by setting up a sanctuary for animals.

Some students in Germany are managing the energy efficiency of their schools, using thermal imaging cameras to detect the most wasteful areas. The result: helping the environment while saving on heating costs.

Shea butter is part of daily life in Africa. The fatty substance from shea tree nuts is used in cooking, salves and moisturizers. A group is trying to convince locals the trees are more valuable alive than used once as firewood.

Deforestation is a vicious circle because it leads to soil erosion which then fuels the need for more land. Nigeria's population is exploding and before things get worse, reforestation efforts need to be ramped up.