One of the founders of leading Swedish tech company Klarna has unveiled an ambitious new Stockholm hub designed to support tech entrepreneurs who are keen to solve social problems.

Niklas Adalberth has invested 170 million kronor ($19.85 million) into converting the old tram warehouse on Birger Jarlsgatan in central Stockholm into the 2,400 square metre Norrsken House.

Described on its website as "Europe's biggest hub for social impact", it is designed to be a working and meeting place for hundreds of social entrepreneurs from across the world.

A significant chunk of the money Adalberth has ploughed into Norrsken House came from selling some of his shares in payment service provider Klarna, which he co-founded in 2005.

Read the full story at thelocal.se.