With autumn on the horizon, this graphic looks at the chemicals behind the myriad colours of autumn leaves; bigger version & download here: http://wp.me/p4aPLT-sn
Apparently there are places in the world where this is starting to happen? I wouldn’t know since Austin still has the summer dial turned up to like 8.5, and our trees don’t so much “change color” as “exhaustedly whither into a brown winter dormancy as if finally exhaling after the release of soul-crushing weight.”
This color-changing thing sounds nice though, I hope to check it out sometime!
PS - “Autumnal carotenoids” would make a great indie band name.
The only couple needed in Brave.
Has your pet Mogwai exploded into a horde of bloody-thirsty Gremlins yet? If not, join Dr. Anton Jessup as he exposes the shockingly believable biology of these asexual midnight munchers.
The blare of human noise causes birds to pipe down and frogs to breed less frequently. Now, scientists have found a humanmade sound that has a far more colorful effect: The boom of a ship’s engine makes common cuttlefish (Sepia officinalis) change the complex swirls of skin hues, stripes, and spots that they use for camouflage and communication. Like other cephalopods such as octopus and squid, cuttlefish rely on visual and tactile signals to communicate; there’s been little evidence so far to suggest they perceive—or respond to—sound. But when researchers placed a loudspeaker near cuttlefish tanks and played the sound of an underwater engine, the animals swam more and changed colors more often. They also raised their first pair of arms, which are used to sense water movements, more frequently, the team reports in this month’s issue of The American Naturalist.