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Garden City in the Kenyan capital Nairobi is one of the largest green building projects on the African continent. The site includes a car park that doubles as a giant solar panel.
In many countries, insects are considered a delicacy. Now a startup wants to bring them to Germany in an eco-friendlier burger that has more protein and iron than beef burgers – but produces 100 times less CO2 emissions.
A group of German students has developed a kit that enables anyone to build their own windmill in a week - from local materials. Having built one in Berlin, they're now inspiring others as far away as Sierra Leone.
Nigerian enterprise SustyVibes - which is short for sustainable vibes - creates content and organizes events in ways that make young people want to stay informed and take eco action.
In many African countries people rely on dirty generators for power. Berlin start-up SunZilla offers an alterantive with its solar kits that can supply and store electricity for up to seven people.
Poor waste management in Zanzibar means residents often throw their garbage onto the streets, generating mountains of rubbish. Now one citizen's community initiative is trying to tackle the problem head on.
Sturgeon fish have been around for more than 200 million years. But they're endangered. One project is trying to reintroduce them to Germany.
So far, growing crops in Germany has been relatively easy. But researchers are investigating how that might change as the planet warms.
Water is already scarce on Cape Verde, a small island nation off Africa's west coast. As climate change exacerbates the problem, what can the country's government do about it?
Two Australian surfers are on a mission to stop plastic pollution in the ocean. They've developed a floating trash can that filters and collects garbage that has made its way into the sea.
Poachers have their eyes on the grazing elephants at home in the foothills of Mount Kilimanjaro. But neighboring Maasai and Safari tour operators are teaming up to protect the animals.
Each year, 11 million tons of food ends up in the bin in Germany. Now, a Danish app wants to help restaurants save their leftovers from the trash can.
Most of South Africa's wine comes from the Cape Floral Kingdom. Some winemakers are trying to protect this unique, plant-rich region from destruction.
Sierra Leone has no functioning public trash collection service. Some inventive tinkerers are taking matters into their own hands by turning discarded soda cans into stable and cheap cooking pots.
Amnesty International publishes its annual statistics on the death penalty, which has been completely abolished in only 104 of 198 countries. It remains extremely difficult to obtain verifiable data for the People's Republic of China. The Chinese government treats executions as a state secret. There are official statistics, but they are believed to be heavily sugarcoated.
How can you tell if mahogany is really mahogany? And can you really know whether the wood in your table wasn't illegally felled? Germany's wood detectives are on the case with DNA analysis.
Millions of tons of plastic are dumped into the ocean each year. But where does it end up? A UK initiative is deploying drones to find out.
Noisy tourist boat engines can be stressful for whales. But on La Gomera, one of Spain's Canary Islands, a company is letting the animals decide for themselves how close to get to tourists.
German researcher Andreas Hemp discovered the 81-meter tree on the slopes of Mount Kilimanjaro 20 years ago. Now he's fighting to save it from the illegal logging rampant across the mountain.
Sick of your phone running out of battery? Now you can use a mini water turbine to charge it up! The German design is already in demand from African communities wanting to generate their own hydropower.
What if you could produce wind energy with a kite? Roderick Read, a Scot living on a remote island, has been working on just such a machine for the past seven years.
A two-year dry spell is threatening an ancient pastoralist way of life in Ethiopia. But a group of vets are trying to help nomads adapt to the changing climate.
How many great plans start out as ideas sketched in graphite? Globally, we get through 14 billion pencils each year. Now, Kenyan entrepreneurs are producing eco-friendly pencils from recycled newspaper.
