If you're looking for a particular street address, all you have to do is turn on your smartphone. But few individual buildings have been mapped inside. Some experts say the field of indoor navigation has a very bright future.
Smartphone apps such as NINA and KATWARN are supposed to warn us in the case of natural catastrophes or terror attacks. But how reliable are they? And how do they work? Here are some answers.
Nearly two-thirds of German youths aged 13 and under read books several times a week, according to a new study. Magazines are still very popular among the age group. Only one-third turns to YouTube for entertainment.
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