A study by the National Land Survey of Finland and the University of Helsinki has revealed significant individual differences ...

Now, a study finds that certain tree species are surprisingly efficient in scrubbing toxic particles from the air. Wind tunnel experiments demonstrate that leaves trap considerable ... Science & ...

So how were the trees giving so much protection? Electron microscope images of the leaves of silver birch trees show why they are so good – they are covered in tiny hairs and ridges which help ...