Archive for January, 2014

Cephalopods

Tuesday, January 28th, 2014

I watched a great documentary about cuttlefish today: Kings of Camouflage (YouTube).

Cuttlefish (German: Sepien) on Wikipedia:

“Cuttlefish are marine animals of the order Sepiida. They belong to the class Cephalopoda, which also includes squid, octopuses and nautiluses. ‘Cuttle’ is a reference to their unique internal shell, the cuttlebone. Despite their name, cuttlefish are not fish but mollusks.
Cuttlefish have large, W-shaped pupils, eight arms, and two tentacles furnished with denticulated suckers, with which they secure their prey. They generally range in size from 15 to 25 cm (5.9 to 9.8 in), with the largest species, Sepia apama, reaching 50 cm (20 in) in mantle length and over 10.5 kg (23 lb) in weight.

Cuttlefish eat small mollusks, crabs, shrimp, fish, octopuses, worms, and other cuttlefish. Their predators include dolphins, sharks, fish, seals, seabirds, and other cuttlefish. Their life expectancy is about one to two years. Recent studies indicate cuttlefish are among the most intelligent invertebrates. Cuttlefish also have one of the largest brain-to-body size ratios of all invertebrates.”

Diese (und letzte) Woche in der Zeit

Monday, January 27th, 2014

Die Zeit 04/2014 und Die Zeit 05/2014

Grundschule: Schulleiter gesucht! “Deutschlands Grundschulen gehen die Rektoren aus. Der Posten ist zu schlecht bezahlt.” Von Ariane Breyer.

Ada Lovelace: Ada und der Algorithmus. “Sie war die erste Programmiererin, noch bevor der Computer erfunden wurde. Ihre Aufzeichnungen inspirieren bis heute.” Von Anne Kunze.

Überwachung: Wie ein Phönix. “Die NSA wird es bald schwer haben. Denn Hacker und Konzerne erfinden das Internet gerade neu.” Von Götz Hamann.

Obama-Doppelgänger: In doppelter Mission. “Louis Ortiz ist New Yorker und sieht aus wie Barack Obama. Als der zum Präsidenten gewählt wurde, veränderte sich Ortiz’ Leben. Ob er wollte oder nicht.” Von Bastian Berbner.

If I were a Science teacher…

Sunday, January 19th, 2014

Oh, wait, I am a science teacher.

ScienceDemo.org is a website full of science experiments that are demonstrated in front of a camera. This is a great resource for teachers, or you could just watch them for fun!

If you can’t get enough of these, the site also offers a list of similar websites: resources and links.

Link via Hal on FB.

2014

Wednesday, January 1st, 2014

Happy New Year to all my readers!

Why not start the new year with look at our planet from space?

Time-Lapse | Earth by Bruce W. Berry jr.

“All Time-lapse sequences were taken by the astronauts onboard the International Space Station (ISS) (Thanks guys for making this available to the public for use!) All footage has been color graded, denoised, deflickered, slowed down and stabilized by myself. Clips were then complied and converted to 1080 HD at 24 frames/sec.”

Link via AskMeFi.