Friday after Friday, pupils and students from all over the world, inspired by the Swede Greta Thunberg, will take to the streets to fight for a future in which global warming will be limited to two degrees, better still to 1.5 degrees. Unlike many "political professionals", the young generation has understood exactly what needs to be done. It is about drastically less consumption and a fair global burden sharing. Above all, we must ensure that 98 percent of fossil fuel reserves remain in the soil. Otherwise it won't help if we save here in Europe (page 114 of the print edition). The industrial nations will have to pay just as much for this as for the preservation of the CO2 sink in the rainforest. How this should work in a world that is...

Stock market strategy. The dynamism of the global economy has slowed noticeably. Drohen will there be a slump in company profits and share prices in the future? Carolin Schulze Palstring, Head of Capital Market Analysis Metzler Private Banking, explores the situation.

Strategy. The United Nations' sustainability goals are to be implemented by 2030. "For companies that do not support these goals, this means significant financial and reputational risks," explains David Hawa of Robeco. He and his colleagues have therefore developed a model with which investors can determine whether a company is conforming to these goals.

Infrastructure. Those looking for stable and high-yield investments have long been able to find interesting investment opportunities in the infrastructure sector. "We are now setting up a strategy that differs significantly from traditional funds in that it focuses on the mid-market segment and has an endless term," says Heiko Schupp, Columbia Threadneedle. "This offers a chance for higher profitability."

Modern Monetary Theory. If the state wanted to spend more to stabilize the economy, it could simply print money - at least that is the "modern" monetary theory. Is a world without a recession really conceivable? What investors should consider.

Real estate. From old to new. In times of scarce land, the revitalisation and rededication of non-essential existing buildings on the company premises can be an interesting, fascinating and lucrative idea. Dr. Klaus Trescher, Kriton Immobilien, explains what entrepreneurs and investors should look out for.