GIRAVVES (UMBRELLA THORN)
Do giraffes make trees taller, or the trees make giraffes’ necks longer? This week, we cover the iconic umbrella thorn tree (Vachellia tortilis) of the African savannahs and talk about how evolution may or may not work.
Completely Arbortrary is produced and hosted by Casey Clapp and Alex Crowson
Support the pod and become a Treemium Member
Follow along on Instagram
Find Arbortrary merch on our store
Cover art by Jillian Barthold
Music by Aves and The Mini-Vandals
Episode cover photo by Ekrem Canli
Additional Reading:
The Umbrella Thorn (Vachellia tortilis)
Jean Baptiste Lamarck
Charles Darwin
The Nuts and Bolts of Necking
Sexual Selection