Germany could embrace wood for heat if Russia further cuts gas flows, Deutsche Bank says.  The bank said in a note that it expects German demand for gas to fall 10% below 2021 levels.  "There are lots of elements of uncertainty," the note said.  German households could turn to wood as a heating source this winter as gas supplies remain tight while Russia restricts flows to Europe, Deutsche Bank wrote in a note Tuesday.  The bank said it expects gas consumption in Germany to be 10% below 2021 levels thanks to private ...