66 billion trees have been planted in China’s Great Green Wall — and they appear to be growing faster than natural forests

A study of China’s planted and natural forests reveals age, species mix, and CO2 sensitivity all contribute to how fast trees sprout leaves.

Trees in China that were planted as part of huge reforestation projects appear to grow faster than those in natural forests, a new study finds. This is possibly because the reforestation trees are responding more strongly to the rising atmospheric carbon dioxide, scientists say. Read more in Live Science.