Nature: Two studies published today reveal fresh details of how much carbon dioxide is being taken up by the planet’s plant life. According to the first paper, published in Nature1, aerosol pollutants have increased photosynthesis globally in recent decades by diffusing light, which helps plants that can’t compete in direct sunshine. In a separate study, also published in Nature2, scientists have issued the first estimate of how much carbon China’s vegetation absorbs. The research on …