By popular demand, your new resident marine biology nerd has compiled some cool information about the Giant Pacific Octopus.The Giant Pacific Octopus (
Octopus dofleini) is one of the strangest animals in the sea- and one of the smartest. Though it is commonly believed that vertebrates are always "smarter" than invertebrates, these guys defy that convention.
As this video shows, they are able to easily open jars and retrieve food from inside. They are also, as the "Giant" implies,
enormous- the biggest one on record was 30 feet across (
according to National Geographic)
posted by WhySharksMatter at 6:57 PM Jul 6 2009 - 140 comments [77 favorites]
One of the hardest things for people to understand about the universe is just
how big it is. There are three approaches typically used in describing its size. The first, the song, was pioneered by
Monty Python (NSFWish, wireframe of naked woman) and then done just as masterfully by
the Animaniacs. The second, the zoom method has been featured
twice before here on the blue. The third method is the
comparison method (skip to 1:30, unless you like looking at a image of the solar system with terrible distorted orbits), yielding some truly
beautiful videos (this one found via the fantastic
Bad Astronomy blog). These videos go, at most, as far as looking at the local cluster or the Virgo Supercluster. There are two videos that attempt to show the size of the entire universe,
one unsuccessfully (although with great music) and
one successfully. (Warning, all links except the first one, are to YT videos).
posted by Hactar at 2:06 PM Jul 1 2009 - 74 comments [69 favorites]
"
The arc of the Milky Way seen from a truly dark location is part of our planet's natural heritage," said Connie Walker, and astronomer from the U.S. National Optical Astronomy Observatory in Tucson, Arizona. Yet "more than one fifth of the world population, two thirds of the U.S. population and
one half of the European Union population have already lost naked eye visibility of the
Milky Way." In these areas, people are effectively living in
perennial moonlight. They rarely realize it because they still experience the sky to be brighter under a full moon than under new moon conditions. "
Reducing the number of lights on at night could help conserve energy, protect wildlife and benefit human health," astronomer Malcolm Smith of the Cerro Tololo Inter-American Observatory in Chile. One study found an increased risk of breast cancer for women living in areas with the most light pollution (
abstract). Some communities are
embracing their dark skies, such as
the New Zealand community of Tekapo, possibly home to first "
Starlight Reserve," waiting on UNESCO's official approval. Not sure where to look
in the vast night sky?
Follow some guidelines, or
check the view in Chile,
Queensland, Australia, or
Texas.
posted by filthy light thief at 11:51 PM Jun 13 2009 - 74 comments [59 favorites]
« All Popular Favorites