harvard_forest_soil_warming_experiment_credit_audrey_barker-plotkin
by David Brooks | Oct 5, 2017 | 0 comments
![harvard_forest_soil_warming_experiment_credit_audrey_barker-plotkin](https://granitegeek.concordmonitor.com/wp-content/uploads/2017/10/harvard_forest_soil_warming_experiment_credit_audrey_barker-plotkin-891044_1080x675.jpg)
Heated and control plots in a long-term soil warming study at Harvard Forest, Petersham, Mass. which began the study in 1991. Photo:
Audrey Barker-Plotkin