Medical technology. People with donor organs must be on guard against infectious diseases throughout their lives. To prevent the organ from being rejected, their immune system must be suppressed. An infection could be a death sentence. Biotechnology companies are now working to preserve the capabilities of these patients' immune systems.

Start-up. The expansion of large wind turbines has almost come to a standstill in Germany. As a result, a niche is opening up for small, cost-effective and modularly expandable turbines. Two Berlin-based founders want to bring them to series production readiness.

Succession. The lighting designer Ingo Maurer from Munich has left to posterity not only his art but also his business. As disorganized as might have been expected from this type of artist. Daughter Claude Maurer needs a new management strategy to keep the company alive.

Technology. Ulrich Weitz transforms simple materials into high-tech materials. And thus turned a small, formerly state-owned company into a globally successful supplier to industry. The products of his company IBU-tec are particularly well received in the future market of battery technology.

Exclusivity. When the premier league of international museums and artists is looking for historical colours, it travels to the Swabian province. There, the family-owned company Kremer makes millions in sales with unique color pigments.