Energy & Green Tech

When the sun switches off the solar panels

The more the sun shines in the southern German town of Aurach, the more likely it is that Jens Husemann's solar panels will be disconnected from the grid—an exasperating paradox at a time when Germany is navigating an energy ...

Energy & Green Tech

Roasting coffee with the rays of the sun

Combining two of Italy's delights—coffee and sunshine—a couple of engineers in Rome have created an environmentally friendly way to roast coffee beans without electricity or gas.