The river that runs through the Kenyan capital once teemed with life. Today it’s the most polluted waterway in the country. Together with young residents from the city’s informal settlements, Frederick Okinda is working to change that.

Many plants need help with pollination and propagation. Insects are by far the most important pollinators, but birds and even lemurs can also transport pollen from one plant to another.

Artists Reyna Franco and Gerald Espinoza come from Venezuela but they live in Quito, Ecuador. DW visits them at home.

Some 60 percent of all tortoises and turtles worldwide are threatened, endangered or critically endangered. In Cambodia turtles and tortoises are eaten and also used in traditional medicine. At the ACCB conservationists are working to protect endangered tortoise species and boost their populations.

15-year-old Saeed Yassen is football-crazy. He's a big fan of Real Madrid and less enthusiastic about Arabic class in school.

An estimated three million people in South Africa have disabilities and struggle to lead normal lives. Her daughter's disabilities inspired Shona McDonald to set up an NGO that makes wheelchairs.

Renewable energies are the key in the fight against climate change. A startup in Mexico develops solar thermal energy for companies. Parabolic mirrors heat liquids up to 260 degrees Celsius - without generating greenhouse gases.

Many slum dwellers in Manila live in constant fear of flooding. Their homes are often right at the water's edge. Rising sea levels make the problem worse. Now they are being relocated.

The "Fridays for Future" demonstrations have brought young people onto the streets around the world to finally spur politicians into action on the environment. In a training camp for activists, they learn how to peacefully fight for a cause.

Gonzalo Palomino Cruz is 13 years old and lives in Ollantaytambo, near Cusco in Peru. He is worried about climate change and that there is hardly any water in so many places in the world.