Not only can drones fly, some can also swim. One drone, the WasteShark, which is currently on the move in the ports of Rotterdam and Dubai, even collects garbage. Read on

Germany has just rolled out the world's first two hydrogen-powered passenger trains, currently running on a 100km route in the north of the country. Read on

What's slow, unsafe and is holding back development opportunities in low-resource countries? Cash, according to the Better Than Cash Alliance. They want to make money completely digital - and by doing so, make the world more economically and socially sustainable. Read on

A road surface that generates electricity from sunlight, absorbs noise, breaks down nitrogen oxides, defrosts ice in winter, provides valuable data and supplies electric vehicles with electricity. Sound too good to be true? It's true, and it's here. Read on

A Swedish spin-off from car and plane manufacturer SAAB is seeking to turn underwater planes into green power producers. And it’s already proven and close to being commercially viable. How useful can it be for the world? Read on

A team of researchers in Spain is transforming old cigarette filters into sound insulation. Read on

In Nigeria, social enterprise WeCycle is taking recycling into their own hands - heading out on bicycles to pick up waste from those people who have been forgotten by the city's collection services. Read on