The birch trees in this photo appear to have been infested with bronze birch borer, as indicated by the dead upper branches where larvae have disrupted the flow of water and nutrients.

Add Yahoo as a preferred source to see more of our stories on Google. There is an abundance of green flakes coating the sidewalks and cars right now, and it seems hard to avoid the white cottony tufts ...

Around 25% of hay fever sufferers in the UK are allergic to birch tree pollen. This means that for a good chunk of the population, the arrival of spring and summer means sneezing, itchy eyes, blocked ...