By Sarah Hansen
It’s well-known that carbon dioxide levels are rising in Earth’s atmosphere and that extra CO2 contributes to climate change. You might also have learned that trees are “carbon sinks” – they take carbon out of the air and store it in their trunks, roots and leaves. But what about carbon in forest soil?
If you’re not sure, you’re in good company. “We’re just learning how carbon moves through the forest at the surface, and that’s the most accessible part of the forest,” said Sean McMahon, senior scientist at the Smithsonian Environmental Research Center (SERC). “Below ground is much more of a mystery.” Click to continue »