trees - hírek
Nipping hayfever in the bud: These are the plants you should avoid if you have pollen allergies
Planting more trees in cities could have saved 1.1 million lives in two decades, study suggests
Volunteers plant trees as Syria's battered Aleppo returns to life
Green space in cities helps mitigate health effects of extreme heat, study finds
Tesla gets go-ahead to expand controversial factory in Germany
