Category: Top Posts

Ebola Teams Need Better Cultural Understanding, Anthropologists Say

By Kari Lydersen | December 9, 2014 8:30 am

A defining feature of this Ebola epidemic has been the significant resistance of some of the affected communities to treatment and prevention measures by foreign aid workers and their own governments. Many local people, suspicious and fearful, have refused to go to treatment centers or turn over bodies for safe burial, and whole communities have prohibited the entry of doctors and health teams.

As the months have gone by that resistance has been less reported upon, and there are signs that it may be lessening. In the Forest Region of Guinea, where the Ebola epidemic started, foreign staff previously faced roadblocks, stone-throwing and violent attacks. But in the last few weeks, as the New York Times has reported, locals have opened up the literal and figurative barricades around their villages and sought outside help.

Still, the friction continues to shape the spread of the disease. Doctors Without Borders’ December briefing paper [pdf] calls the situation in Guinea “alarming,” with 25 percent more cases reported in November than October and many areas where there is “still a great deal of resistance towards Ebola response” and their teams are “not welcome.”

The solution, some say, is to reevaluate treatment and prevention tactics with the benefit of an anthropological perspective. That was the call delivered last week by a meeting of the American Anthropological Association in Washington D.C. If international staff had approached the epidemic from day one with more understanding of cultural, historical and political context, attendees said, local traditions and community leaders could have become assets rather than obstacles in the fight against Ebola.

The American Anthropological Association is asking for anthropologists to become more involved in the global Ebola response. They have started the Ebola Emergency Response Initiative to connect anthropologists who are already working in or experienced with West Africa, and to build structures and programs that help more anthropologists spend time directly involved in the Ebola response on the ground.

“We’ve worked in these places and we’re watching our friends die,” said University of Florida professor Sharon Abramowitz, one of the founders of the initiative.

Abramowitz points out that the anthropologists involved in the initiative have a total of 300 years of ethnographic experience in the affected West African nations – experience which could help medical scientists both understand and respond to the epidemic.

Read More

CATEGORIZED UNDER: Health & Medicine, Top Posts

Should a Chimpanzee Be Considered a Person?

By Dan Falk | December 5, 2014 1:20 pm

shutterstock_223179226

What would it take for an animal to be considered a person? In a landmark court case that reached its conclusion in a New York State appellate court yesterday, a five-judge panel refused to grant legal personhood to a chimpanzee named Tommy. Their unanimous decision: He’s not a person, in spite of the best arguments put forward by a group called the Nonhuman Rights Project (NhRP).

Tommy’s owner keeps the chimp in a wire-mesh cage, inside a nondescript warehouse, in upstate New York. That’s not illegal, because it’s not illegal to own a chimpanzee in New York State. In the eyes of the law, Tommy isn’t a person – he’s property.

Tommy, the court ruled, “is not a ‘person’ entitled to the rights and protections afforded by the writ of habeas corpus” – the legal term for a petition urging a court to halt the unlawful detention of a prisoner.

The court decision ends this particular battle, but the legal wrangling, and the larger philosophical questions that swirl around human-animal relations, are sure to continue.

Read More

CATEGORIZED UNDER: Living World, Top Posts
MORE ABOUT: animals

Three Totally Mind-bending Implications of a Multidimensional Universe

By David Warmflash | December 4, 2014 1:38 pm
universes

Image by Juergen Faelchle / Shutterstock

Nearly a century ago, Edwin Hubble’s discovery of red-shifting of light from galaxies in all directions from our own suggested that space itself was getting bigger. Combined with insights from a handful of proposed non-Euclidean geometries, Hubble’s discovery implied that the cosmos exists in more than the three dimensions we’re familiar with in everyday life.

That’s because parts of the cosmos were moving further apart, yet with no physical center, no origin point in three-dimensional space. Just think of an inflating balloon seen only from the perspective of its growing two-dimensional surface, and extrapolate to four-dimensional inflation perceived in the three-dimensional space that we can see. That perspective suggests that three-dimensional space could be curved, folded, or warped into a 4th dimension the way that the two dimensional surface of a balloon is warped into a 3rd dimension.

We don’t see or feel more dimensions; nevertheless, theoretical physics predicts that they should exist. Interesting, but are there any practical implications? Can they become part of applied physics?

Read More

CATEGORIZED UNDER: Space & Physics, Top Posts

The Surprising Personality Traits of Extreme Adventurers

By Emma Barrett and Paul Martin | December 4, 2014 7:08 am

extreme_climber

When considering extreme environments it is easy to make assumptions about personality, which on closer examination do not stand up to scrutiny. Take, for example, one of the best-researched personality dimensions: introversion-extraversion. Extraversion as a trait appears in all established psychological models of personality, and there is considerable evidence that it has a biological basis. The concepts of introversion and extraversion long ago escaped the confines of academic psychology and are widely used in everyday conversation, albeit in ways that do not always reflect the psychological definitions.

Broadly speaking, individuals who score highly on measures of extraversion tend to seek stimulation, whereas those who score low tend to avoid it. When asked to describe a typical extravert, most people tend to think of the lively ‘party animal,’ equating extraversion with a preference for social interactions. However, individuals who score highly for extraversion seek more than just social stimulation: they also tend to gravitate toward other stimulating situations, including active leisure and work pursuits, travel, sex, and even celebrity. Introverts, on the other hand, have a generally lower affinity for stimulation.

They find too much stimulation, of whatever type, draining rather than energizing. Contrary to popular belief, introverts are not necessarily shy or fearful about social situations, unless they also score highly on measures of social anxiety and neuroticism.

On this basis, one might assume that extraverts would be drawn to extreme environments, where they could satisfy their desire for stimulating situations, whereas introverts would find them unattractive. And yet, extreme environments may also expose people to monotony and solitude — experiences that extraverts would find aversive, but which are tolerated or even enjoyed by well-balanced introverts. The point here is that simple assumptions about broad personality traits are unlikely to provide good explanations of why people engage in extreme activities.

Read More

CATEGORIZED UNDER: Mind & Brain, Top Posts
MORE ABOUT: psychology

Why Do Human Children Stay Small For So Long?

By John Skoyles, University College London | December 2, 2014 11:40 am

child with orangutan

This article was originally published on The Conversation.

Why does it take so long for human children to grow up? A male chimp and male human, for example, both end up with the same body weight but they grow very differently: at year one the human weighs twice that of the chimp but at eight the chimp is twice that of the human. The chimp then gains its adult weight by 12 – six years before the human. A male gorilla is also a faster growing primate – a 330-pound male gorilla weighs 110 pounds by its fifth birthday and 265 pounds by its tenth.

Clues to the answer can be found in the young human brain’s need for energy. Radioactive tracers allow scientists to measure the glucose used in different areas of the brain but this procedure is only used rarely when it is justified by investigating neurological problems. However, the few cases we do have reveal how radically different the childhood brain is from that in adults or infants.

From about the age of four to puberty, the young brain guzzles glucose – the cerebral cortex, its largest part, uses nearly (or more than) double that used earlier or later in life. This creates a problem. A child’s body is a third of the size of an adult but its brain is nearly adult-sized. Calculated as a share, a child’s takes up half of all the energy used by a child.

Read More

CATEGORIZED UNDER: Living World, Top Posts

To Halt Ebola’s Spread, Researchers Race for Data

By Kari Lydersen | November 28, 2014 10:32 am
At a burial in Freetown, Sierra Leone, on Nov. 19, a member of the burial team struggles to regain his footing. Photo by Nikki Kahn/The Washington Post

An Ebola victim’s burial in Freetown, Sierra Leone, on Nov. 19. Nikki Kahn/The Washington Post/Getty Images

The Ebola virus has consistently stayed several steps ahead of doctors, public officials and others trying to fight the epidemic. Throughout the first half of 2014, it spread quickly as international and even local leaders failed to recognize the severity of the situation. In recent weeks, with international response in high gear, the virus has thrown more curve balls.

The spread has significantly slowed in Liberia and beds for Ebola patients are empty even as the U.S. is building multiple treatment centers there. Meanwhile the epidemic has escalated greatly in Sierra Leone, which has a serious dearth of treatment centers. And in Mali, where an incursion was successfully contained in October, a rash of new cases has spread from an infected imam.

Predicting the trajectory of Ebola rather than playing catching-up could do much to help prevent and contain the disease. Some experts have called for prioritizing mobile treatment units that can be quickly relocated to the spots most needed. Figuring out where Ebola is likely to strike next or finding emerging hot spots early on would be key to the placement of these treatment centers.

But such modeling requires data, and lots of it.  And for stressed healthcare workers on the ground and government and non-profit agencies scrambling to combat a raging epidemic, collecting and disseminating data is often not a high priority.

Read More

CATEGORIZED UNDER: Health & Medicine, Top Posts

Can Doggie DNA Tests Decode Your Mutt’s Makeup?

By Gemma Tarlach | November 25, 2014 9:00 am
DogDNA03

Photo by Ernie Mastroianni/Discover

Mixed breed. Mongrel. Roadside setter. A something-something. Dogs of uncertain provenance get called a lot of things. When the animal arrives at a shelter, staff usually can make only an educated guess about the dog’s parentage.

Most of the dogs at my local animal control are assessed as “pit mixes” upon arrival — including the three I’ve adopted over the past 2 years. But a pit bull isn’t a breed: it’s just a type of dog characterized by a short coat, muscular frame and broad, oversized head.

All three of my dogs clearly — at least to my eyes — showed signs of specific breeds somewhere in their heritage: Tall and snow white Pullo looks like the breed standard for an American Bulldog. Tyche’s body is svelte like a boxer’s and inky black like some Labs. And lanky, long-limbed Waldo sometimes bays like a hound, especially when treeing squirrels.

Guessing my dogs’ breeds was a fun parlor game, but I wanted more definitive answers. So I turned to science. And, well, let’s just say it’s a good thing I didn’t place any bets on what was in my dogs’ family trees.

Read More

CATEGORIZED UNDER: Living World, Top Posts
MORE ABOUT: animals, genetics, pets

A Better Way to Screen Airport Passengers, With Psychology

By Coral J. Dando, University of Wolverhampton | November 24, 2014 9:35 am

airport security

This article was originally published on The Conversation.

International airports are a busy place to be. Nearly 140,000 passengers pass through New York’s JFK Airport every day. The internal security of the country depends on effective airport checks.

All departing passengers pass through a series of security procedures before embarking their plane. One such procedure is a short, scripted interview when security personnel must make decisions about passenger risk by looking for behavioral indicators of deception.

These are referred to as “suspicious signs”: signs of nervousness, aggression and an unusual interest in security procedures, for example. However, this approach has never been empirically validated and its continued use is criticized for being based on outdated, unreliable perceptions of how people behave when being deceptive.

Despite these concerns, the suspicious signs approach continues to dominate security screening: the US government spends $200 million yearly on behavior-detection officers, who are tasked with spotting suspicious signs. This is a waste of money.

Read More

CATEGORIZED UNDER: Mind & Brain, Top Posts

If Mars Once Hosted Life, How Would We Know?

By Sarah Scoles | November 5, 2014 9:00 am

mars

Despite a few press-stopping false alarms and a long-standing sci-fi fascination, there’s no evidence of biology — microscopic, trilobitish, or creepily humanoid — on Mars.

But that hasn’t stopped the Curiosity rover from running around saying “This spot would have been habitable” and “That spot definitely has water.” And it hasn’t stopped astronomer Nathalie Cabrol from searching for the ever-elusive “biosignatures”: evidence, like geological graffiti, that proclaims “LIFE WUZ HERE.”

But it isn’t as easy as finding a spray-painted tag. First of all, the life almost certainly isn’t alive anymore. And second of all, it probably hasn’t been alive for a long time. Around 3.5 billion years ago, Mars changed from being a relatively nice place into the frozen radiation-zapped desert it is today. It was never San Juan, but it does seem to have had a milder climate, water oceans, and a thick, protective atmosphere. If this young sub-Caribbean Mars was home to life, that life may have left its mark. The problem is that we aren’t totally sure what that mark might look like.

Read More

CATEGORIZED UNDER: Space & Physics, Top Posts
MORE ABOUT: Mars

From the Brink of Extinction, Some Frogs Defy the Odds

By Robin Moore | November 4, 2014 9:00 am
The Variable Harlequin Frog is just one of the so-called Lazarus frogs rediscovered in recent years.

The Variable Harlequin Frog is just one of the so-called Lazarus frogs rediscovered in recent years.

In 2003, two young biology students called Justin Yeager and Mark Pepper were in Costa Rica studying poison dart frogs when their guide presented them with a pair of beautiful orange-yellow and black frogs. They were left speechless, because in front of them was a species that was no longer meant to exist.

The Variable Harlequin Frog, Atelopus varius, had disappeared from cool streams across Costa Rica and Panama in the early 1990s, leaving not even a corpse to mark its existence. Its vanishing, alongside myriad other frogs including the famed golden toad, was later attributed to the wave-like spread of a pandemic pathogen – a fungus responsible for the greatest disease-driven loss of biodiversity in our times – against a backdrop of a changing climate and dwindling and damaged habitats.

In the wake of such carnage, was the variable harlequin frog a lone survivor? Could it increase our understanding of the current mass extinction and help us stem the hemorrhaging of life from our planet?

The harlequin frog, it would turn out, was not alone. Five years after its rediscovery herpetologist Robert Puschendorf was crashing through the dry forests of north Australia when he found a small population of Armored Mist Frog, Litoria lorica, living with the very same chytrid fungus that was believed to have wiped it out 17 years previously. The following year in New South Wales the Yellow-spotted Bell Frog, Litoria castanea, hopped back to life after 30 years without trace. Back in the Americas, Lazarus frogs were reappearing in Ecuador, Venezuela, Colombia and Costa Rica, years and even decades after they were thought to have been wiped out.

Read More

CATEGORIZED UNDER: Living World, Top Posts
MORE ABOUT: animals
NEW ON DISCOVER
OPEN
CITIZEN SCIENCE
ADVERTISEMENT

Discover's Newsletter

Sign up to get the latest science news delivered weekly right to your inbox!

The Crux

A collection of bright and big ideas about timely and important science from a community of experts.
ADVERTISEMENT

See More

ADVERTISEMENT
Collapse bottom bar
+

Login to your Account

X
E-mail address:
Password:
Remember me
Forgot your password?
No problem. Click here to have it e-mailed to you.

Not Registered Yet?

Register now for FREE. Registration only takes a few minutes to complete. Register now »