Mongabay: A recent study published in the Proceedings of the National Academy of Sciences finds that vines called lianas reduce the carbon storage capacity of tropical forests by crowding out and sometimes even killing trees. With tropical forests acting as one of the worlds greatest defenses against global warming, the studys authors say that understanding the impact of lianas on carbon sequestration is important to figuring out just how much carbon forests will be able to store in the coming years. Lianas...