Cheetahs’ Secret Weapon: A Tight Turning Radius [New York Times]
"Anyone who has watched a cheetah run down an antelope knows that these cats are impressively fast. But it turns out that speed is not the secret to their prodigious hunting skills: a novel study of how cheetahs chase prey in the wild shows that it is their agility — their skill at leaping sideways, changing directions abruptly and slowing down quickly — that gives those antelope such bad odds."
posted by Fizz
on Jun 13, 2013 -
Is Psychometric g a Myth?
- "As an online discussion about IQ or general intelligence grows longer, the probability of someone linking to statistician Cosma Shalizi's essay g, a Statistical Myth
approaches 1. Usually the link is accompanied by an assertion to the effect that Shalizi offers a definitive refutation of the concept of general mental ability, or psychometric g
." [more inside]
posted by kliuless
on Apr 11, 2013 -
The concept of nothing is as old as zero itself. How do we grapple with the concept of nothing? From the best laboratory vacuums on Earth to the vacuum of space to what lies beyond, the idea of nothing continues to intrigue professionals and the public alike.
Join moderator and Hayden Planetarium Director Neil deGrasse Tyson
as he leads a spirited discussion with a group of physicists, philosophers and journalists about the existence of nothing. The event, which was streamed live to the web, took place at the American Museum of Natural History on March 20, 2013. [more inside]
posted by lazaruslong
on Mar 25, 2013 -
The Nature of Computation
- Intellects Vast and Warm and Sympathetic
: "I hand you a network or graph, and ask whether there is a path through the network that crosses each edge exactly once, returning to its starting point. (That is, I ask whether there is a 'Eulerian' cycle.) Then I hand you another network, and ask whether there is a path which visits each node exactly once. (That is, I ask whether there is a 'Hamiltonian' cycle.) How hard is it to answer me?" (via
) [more inside]
posted by kliuless
on Dec 1, 2012 -
First Evidence Found for Photosynthesis in Insects: [nature.com]
"The biology of aphids is bizarre: they can be born pregnant and males sometimes lack mouths, causing them to die not long after mating. In an addition to their list of anomalies, work published this week indicates that they may also capture sunlight and use the energy for metabolic purposes."
posted by Fizz
on Aug 18, 2012 -
North Americans may have noticed that U-Haul
trucks and trailers are emblazoned with colorful SuperGraphics
. First created in 1988 (previously
), the mobile gallery now comprises 206 images. Most U.S states and Canadian territories and provinces are now honored by multiple designs, as are the U.S. armed forces and 9/11
. The classic America and Canada's Moving Adventure
series, seen on trucks and trailers
, features an iconic image for each state, province and territory. The Venture Across America and Canada
series, begun in 1997, presents "carefully researched rare findings, little-known facts and mysteries,"
exploring science and nature, technology and history. At the U-Haul website, the "Learn More" link on each Venture SuperGraphic page leads to a surprisingly exhaustive discussion of the subject of each graphic. [more inside]
posted by BrashTech
on Jul 22, 2012 -
Morton and Vicary on the Categorified Heisenberg Algebra
- "In quantum mechanics, position times momentum does not equal momentum times position! This sounds weird, but it's connected to a very simple fact. Suppose you have a box with some balls in it, and you have the magical ability to create and annihilate balls. Then there's one more way to create a ball and then annihilate one, than to annihilate one and then create one. Huh? Yes: if there are, say, 3 balls in the box to start with, there are 4 balls you can choose to annihilate after you've created one but only 3 before you create one..." [more inside]
posted by kliuless
on Jul 21, 2012 -
"Adrian Owen still gets animated when he talks about patient 23.
The patient was only 24 years old when his life was devastated by a car accident. Alive but unresponsive, he had been languishing in what neurologists refer to as a vegetative state for five years, when Owen, a neuro-scientist then at the University of Cambridge, UK, and his colleagues at the University of Liège in Belgium, put him into a functional magnetic resonance imaging (fMRI) machine and started asking him questions. Incredibly, he provided answers."
posted by jquinby
on Jun 15, 2012 -
How the zebra came by his stripes.
"Why zebras evolved their characteristic black-and-white stripes has been the subject of decades of debate among scientists.
Now researchers from Hungary and Sweden claim to have solved the mystery."
posted by estherhaza
on Feb 9, 2012 -
In a room near Maida Vale, a journalist for The Nation wrote around 1914, an unfortunate creature is strapped to the table of an unlicensed vivisector. When the subject is pinched with a pair of forceps, it winces. It is so strapped that its electric shudder of pain pulls the long arm of a very delicate lever that actuates a tiny mirror. This casts a beam of light on the frieze at the other end of the room, and thus enormously exaggerates the tremor of the creature. A pinch near the right-hand tube sends the beam 7 or 8 feet to the right, and a stab near the other wire sends it as far to the left. "Thus," the journalist concluded, "can science reveal the feelings of even so stolid a vegetable as the carrot."
posted by vidur
on Nov 28, 2011 -
Five years ago this week, the BBC started broadcasting one of the most extraordinary documentaries ever to grace television: Planet Earth
. The culmination of five years of field work
, it employed the most cutting-edge of techniques
in order to capture life in all its forms, from sweeping spaceborne vistas to shockingly intimate close-ups
-- including many sights
rarely glimpsed by human eyes. Visually spectacular
, it showcased footage shot in 204 locations in 62 countries
, thoroughly documenting every biome from the snowy peaks of the Himalayas to the lifegiving waters of the Okavango Delta
, a rich narrative tapestry backed by a stirring orchestral score
from the BBC Concert Orchestra. Unfortunately, the series underwent some editorial changes
for rebroadcast overseas. But now fans outside the UK can rejoice -- all eleven chapters of this epic story are available on YouTube in their original form: uncut, in glorious 1080p HD, and with the original narration by renowned naturalist Sir David Attenborough
. Click inside for the full listing (and kiss the rest of your week goodbye). [more inside]
posted by Rhaomi
on Mar 7, 2011 -
SEED Magazine: Wealth of Nations
: "Shared natural resources underpin the global economy, but our current economic system does not acknowledge their worth. Can a major new effort to assess the costs of biodiversity loss force a paradigm shift in what we value?" [more inside]
posted by zarq
on Nov 30, 2010 -
"Papers that are scientifically flawed or comprise only modest technical increments often attract undue profile. At the same time publication of truly original findings may be delayed or rejected."
In an open letter
addressed to Senior Editors of peer-review journals, Professor Austin Smith
) and another 13 stem cell researchers from around the world have expressed their concerns
over the current peer review process employed by the journals publishing in the field of stem cell biology. [more inside]
posted by kisch mokusch
on Feb 3, 2010 -
Australian scientists have found the world's oldest penis
. Published Monday in the online version of Nature
, the discovery of the 400 million-year-old clasper in an ancient fish specimen shows that animals were gettin' it on earlier than previously thought. Says one study author, "We were surprised because it's so big. We were expecting something smaller." SFW
posted by Dilemma
on Jul 16, 2009 -
Imagine nature's most elegant ideas organized by design and engineering function, so you can enter "filter salt from water" and see how mangroves, penguins, and shorebirds desalinate without fossil fuels. That's the idea behind AskNature
, the online inspiration source for the biomimicry
community. The featured pages
are a good starting point. Cross-pollinating biology with design. [more inside]
posted by netbros
on Jun 5, 2009 -
Have you ever wondered what New York was like before it was a city? Find out at The Mannahatta Project
, by navigating through the map to discover Manhattan Island and its native wildlife in 1609. [more inside]
posted by netbros
on Jun 4, 2009 -
is the nature caused by human culture. The technological world has become so intricate and uncontrollable that it has become a nature of its own. Scientific research into nanotechnology, genetic manipulation, ambient intelligence, tissue engineering... all of these young research fields radically interfere with our sense of what is ‘natural’. Here's a visual introduction
into next nature. [more inside]
posted by netbros
on Apr 19, 2009 -