From an Amsterdam supermarket which has become the first in the world to open a plastic-free section to a Berlin store which has cut out plastic completely: we visit two pioneering stores taking a stand against waste.

It took seven years to build: the KivuWatt power station in Rwanda is the first commercial power plant of its kind. It is designed to turn methane from Lake Kivu and the surrounding villages into electricity.

Ivory Coast is the largest agricultural producer in West Africa - and most farmers use chemical fertilizers. But an eco-friendly business based in the capital Abidjan has found success producing organic alternatives.

Farmers in Kenya’s West Pokot County struggled to sell their milk as it often spoilt during transportation. Then Percy Lemtukei found a solution: solar powered milk coolers designed to fit onto donkeys and motorcycles!

In an effort to find an alternative to throwing away food, restaurant owner Dounia Mebtoul started the first "solidarity fridge" in front of her Paris eatery. Now anyone can take food from the fridge.

In Cameroon's Korup National Park, groups are seeking to overcome the "conservation or communities" conundrum by promoting sustainable forestry and wildlife management. But it's no easy task.

It's easy to imagine the African landscape dominated by large predators. A closer look reveals thousands of insect, lizard and frog species. Their role in the ecosystems may be more important than their larger cousins.

Sunday Ekesi from the International Centre of Insect Physiology and Ecology in Kenya answers our questions about what benefits insects actually bring and how global warming is impacting them for the worse.

Biologist Peter Katz has been breeding insects for decades to fight against plant pests. And although convinced of the value of his tiny army, he doesn't believe feeding the world is possible without pesticides.

In an effort to find an alternative to throwing away food, restaurant owner Dounia Mebtoul started the first "solidarity fridge" in front of her Paris eatery. Now anyone can take food from the fridge.