Wood for Germany's construction sites is becoming scarce.  Real estate companies warn that urgently needed housing construction is threatened with a standstill. And carpenters and joiners are also groaning about the price of wood, and they even have to hoard the precious raw material.  "We have to expect delivery bottlenecks and waiting times of up to four months," says master carpenter Christian Sturm. He now even has to buy in advance: "That even led to the toilet paper effect occurring and we literally hammered wood."  Actually there is enough wood in Germany. But most of ...