They Might Be Giants web site today leads with the headline It's Arbor Day, treehuggers! followed by a video entitled C is for Conifers.
(Note to Mudelves - When this becomes an old thread - possibly tomorrow - the link will become redundant)(and then this link should work -Joe Offer-)
I'd never heard of Arbor Day - Wikipedia says THIS about it.
It seems to be (different dates in different countries) an official holiday dedicated to planting trees.
Why Can't we have interesting and useful holidays in England?
Geoff the Duck.