Having plenty of green spaces like vegetation, trees and parks may help improve cognition in students according to a study in spain. The link was strongest with green spaces at school possibly because children spend a major part of their day here.

Though no direct evidence relating greenery and brain power was found, the co- relation is strong because green spaces have less pollution, encourage physical activity, reduce stress and have a calming effect. These factors could contribute to the overall growth and development with improved brain performance.

The study is published in the June 15 issue of the Proceedings of the National Academy of Sciences.