Hard-pressed by humans, rainforests lost their ability to act as carbon sinks

Rainforests are too degraded to act as carbon sinks any longer, a new paper reports. Averaged across the globe, rainforests now have a positive output of greenhouse gases, prompting the authors to call for urgent conservation efforts that will allow rainforests to re-don the mantle of carbon sinks. Image via Pixabay. The team, composed of scientists…