Wolfgang Frey, a practicing architect who specializes in sustainability in Freiburg, Germany, has found a way to offset his own carbon dioxide „debt“. In the spring of 2014 Mr. Frey began a reforestation project on the Chinese mountain Xishan (‘West
Wolfgang Frey, a practicing architect who specializes in sustainability in Freiburg, Germany, has found a way to offset his own carbon dioxide „debt“. In the spring of 2014 Mr. Frey began a reforestation project on the Chinese mountain Xishan (‘West