At this time of the year, you can spot old Christmas trees floating down canals, dumped on sidewalks or even being recycled by elephants. In The Hague alone the council picks up 50,000 Christmas trees after the winter festivities. Brandon Hartley has been finding out what happens to them. Piles of abandoned Christmas trees are a depressing sight. “The ease with which they are bought leads to the ease in throwing them away,” Rotterdam council spokesman Peter van Druten told…