Reinforced concrete is heavy and its steel skeleton vulnerable to rust. Now researchers have replaced the steel with carbon fibre mesh. The result is lighter and more flexible than standard concrete slabs.
The US border agency has awarded contracts for construction companies to build non-concrete prototypes for the Mexican border wall. But the question of who will pay remains unanswered.
An alternative to steel enforced concrete has taken out the German Future Prize 2016. Edging out the inventions of pinpointed laser light and efficient motors.
Just behind The Hague's sandy beaches under the dunes lie dozens of Nazi bunkers built during World War II which the Dutch are now dusting off to attract tourists and to help heal lingering scars.
The numbers of men working in childcare have risen by more than two thirds in Germany since 2006. But the proportion of men continues to be extremely small - and not only because of the modest wages.
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