Forming attitudes is hard. It may be exciting to start a new habit, but it’s challenging to make it stick. This may often happen when we try to go green, consume less energy and constantly follow virtuous behaviours in the buildings where we live and work.

Long-touted advances of smart cities may finally become reality with the increases to wireless network speeds and bandwidths promised by the switch to 5G .

“When I grab something hard, then I can feel it in the fingertips, which is strange, as I don’t have them anymore. It’s amazing,” said Robin af Ekenstam , who lost his hand when an aggressive tumour was discovered on his right wrist.

Richard Stallman , 62 years, is that kind of man who you could just think is a genuine down-to-earth dreamer.

Sharing emotions is a central part of human communication. Moreover, the internet is becoming an important medium to share them. And this has given rise to collective emotions in online groups.

Paul Lukowicz is head of the embedded intelligence research group at the German Research Center for Artificial Intelligence in Kaiserslautern.