Bugs in key role of CO2 storage method

Tiny microbes are at the heart of a novel agricultural technique to manage harmful greenhouse gas emissions. Scientists have discovered how microbes can be used to turn carbon dioxide emissions into soil-enriching limestone. Their technique uses help from a type of tree that thrives in tropical areas, such as West Africa. Locking away carbon. Researchers studied what takes place when the Iroko tree is grown in dry, acidic soil and treated with a combination of natural fungus and bacteria. They saw that not only does the tree flourish, it also produces the mineral limestone in the soil around its roots - a way of locking up carbon. The tree makes a mineral by combining calcium from the earth with CO2 from the atmosphere.