Terra preta is the portuguese name of a type of soil which is thought to have almost miraculous properties the newspapers are flooded with reports about black gold scientists believe that two of the greatest problems facing the world climate change and the hunger crisis can be solved by it the beauty of it is that everyone can . Terra preta is the portuguese name of a type of soil which is thought to have almost miraculous properties the newspapers are flooded with reports about black gold scientists believe that two of the greatest problems facing the world climate change and the hunger crisis can be solved by it. In the book terra preta how the worlds most fertile soil can help reverse climate change and reduce world hunger ute scheub and co authors claim increasing the humus content of soils worldwide by 10 percent within the next 50 years could reduce atmospheric co2 concentrations to pre industrial levels. Terra preta how the worlds most fertile soil can help reverse climate change and reduce world hunger paperback may 10 2016 by ute scheub author haiko pieplow author hans peter schmidt author 41 out of 5 stars 19 ratings see all formats and editions. Terra preta is the portuguese name of a type of soil which is thought to have almost miraculous properties the newspapers are flooded with reports about black gold scientists believe that two of the greatest problems facing the world climate change and the hunger crisis can be solved by it the beauty of it is that everyone can do something about it because since 2005 the secret of