He studied geography with a minor in biology and computer science at the University of Bern and is now completing his master’s degree at the Oeschger Centre for Climate Change Research. Nils Tinner is also the mind – and the hard-working hands – behind the “Bernometer”: What started out as a leisure project is now an app that uses artificial intelligence methods to calculate how warm it is on your doorstep for every neighborhood in the city of Bern. “The biggest differences are at night,” says Tinner. “Up to six degrees between cooler and warmer places.” Nights in which the temperature does not fall below 20 degrees are relevant to your health. Zollikofen has never seen such a tropical night; there are more than ten a year in the old town.