More cities around the world are threatened by intense rainfall. Scientists in Aachen, Germany, developed a smart radar system that can predict earlier and more precisely when it will rain. It could be used anywhere.

Technological innovations have brought humans and machines together. Exoskeleton suits worn on the body enable wearers to lift things and walk more easily. And in the future taxis could be controlled from an office.

Robots have been deployed after earthquakes to traverse uneven terrain. They're quick, smart and some can even pick raspberries. But they will never completely replace humans because they lack true intelligence.

Most urban building involves concrete – and the cement industry causes more CO2 emissions than commercial aviation. How about climate-neutral wood? Berlin hosts a growing number of buildings using natural material.

Many consider e-cars a sustainable alternative to gasoline- and diesel-powered transportation. But it’s not that straightforward. We analyze some of the issues.

Traffic jams cost us time and money. Ant highways are also super-busy – but clearly run a lot smoother. Those insect insights could be translated into better traffic conditions in the human world.

Berlin’s population grows by about 20,000 a year. Forecasts say the city will be home to 4 million people by 2030.  Its streets are increasingly busy as cars, cyclists and pedestrians vie for space. We talk to experts about sustainable solutions.

As the world's sprawling megacities continue to grow, so do problems for their populations. They need new concepts for mobility, sustainability and urban planning – sooner rather than later.

Most urban building still involves concrete – and the cement industry accounts for three times more CO2 emissions than commercial aviation. How about climate-neutral wood? Berlin is home to a growing number of buildings using the natural material

Traffic jams cost us time and money. Ant highways are also super-busy – but clearly run a lot smoother. Those insect insights could be translated into better traffic conditions in the human world.