Kenya, Vanuatu, UK, Taiwan, Zimbabwe, Montreal, Malibu, Seattle, Australia, Canada, Hamburg, France, New Delhi, Morocco, Rwanda and New York have made serious strides in the race against plastic.
A tear opens up in Kenya's Rift Valley. Geologists say it will - in a few million years - lead to the continent splitting in two.
A US charity launched this week a 12-year-long experiment in Kenya involving 6,000 people and $30 million to test the potential success of basic income.
In Kenya, efforts to produce wind power on a grand scale are underway. The project is set to provide 310 MW of renewable power to the Kenyan national grid.
This waste-to-resource project not only produces a less smoky and long-burning fire, but could also help improve health and sanitation outcomes.
It is the only vaccine developed against malaria that has successfully made it to the large scale testing.
Kenya has banned the manufacture and import of all plastic bags used for commercial and household packing. It's the latest African nation to do so.
Two years ago, Kenyan astronomer Susan Murabana and her husband decided to travel the country, taking their telescope to tens of thousands of children.