The New Scientist's "Ten things we don't understand about humans" is a head-scratching tour of humanity's inexplicables from laughter to pubic hair:
Pubic hair: Scent radiator, warmth provider, or chafe protection? The answer to why humans have clumps of hair in private places is still open for debate…
Teenagers:
Even our closest relatives, the great apes, move smoothly from their juvenile to adult life phases – so why do humans spend an agonising decade skulking around in hoodies?
Ten things we don't understand about humans
(via Kottke)
