Measuring Progress (IMAGE) Michigan State University Caption Michigan State University associate professor Andrés Viña measures tree girth in China's Wolong Nature Reserve to help track reforestation progress. Credit Sue Nichols, Michigan State University Center for Systems Integration Usage Restrictions With credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.