Photosynthesis grew by 30% over 200 years: Study
US-based researchers have estimated that net plant photosynthesis on Earth grew by 30% over the 200-year record they captured. The research did not identify the cause of the increased photosynthesis but suggested rising CO2 levels, longer growing seasons, and nitrogen pollution as probable reasons. However, emissions from fossil fuel burning overwhelm the CO2 uptake by plants, researchers said.