The circular plots consist of aspen and birch trees, surrounded by PVC pipes that allowed scientists to vent carbon dioxide and ozone gas into the air around the trees, to study what effect high ...

Northeast Michigan became a graveyard for fallen trees in the wake of the recent ice storm that passed through multiple ...

the branches of the birch have been spread out and the wind has been rustling them. The poplar, on the other hand, has been standing straight, reaching toward the clouds. Next up, we have another tree ...

birch, and Scots pine have both male and female flowers on every tree – and pollination by the wind results in the production of seeds on the female trees. However, aspen also has the ability to ...