New app sheds light on phone usage

A year ago, Northwestern University PhD student John Rula accidentally left his smartphone in a taxi. After exiting the car, he checked his pockets multiple times only to find them empty. That's when the anxiety set in.

One billion people still live without electricity

A single light bulb greatly simplifies a family's daily life, enabling family members to carry out various activities indoors. The children do their homework, and the mother sews or prepares dinner. Indoor lighting also makes ...

Video: Solar power from energy-harvesting trees

Scientists at VTT have developed a prototype of a tree that harvests solar energy from its surroundings - whether indoors or outdoors - stores it and turns it into electricity to power small devices such as mobile phones, ...

Electromobility as privacy hazard

Consumers who charge an electric vehicle on a regular basis may leave a data trail. With each charging process, the system saves when and where it took place and which customer paid for it – a privacy risk, says Tilman ...

Adequate design of electric vehicles

Which electric motor fits to which driving situation? This was the subject of the master's thesis written by Lisa Braun at the Karlsruhe Institute of Technology (KIT). Her studies might con-tribute to optimizing electric ...

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