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Tag: "changing" at biology news

Tamed 11,400 years ago, figs were likely first domesticated crop

... -- from exploiting the earth as it is to actively changing the environment to suit our needs," says Bar-Yosef, professor of anthropology in Harvard's Faculty of Arts and Sciences and curator of Paleolithic archaeology at Harvard's Peabody Museum of Archaeology and Ethnology. "People decided to intervene in n...

Adults who go to bed lonely get stress hormone boost next morning

...ctuations in this hormone assist us in meeting the changing demands we face in our daily lives." The first ...ll of her work, Adam is interested in how people's changing social environments get under the skin to influence their biology and health. "Stress systems are de...

Gut reaction: Researchers define the colon's genome

...the human microbiome evolving as a function of our changing diets, lifestyle, and biosphere? Finally, how might we alter these microbial communities for better health in a person or population? ...

Scientists' cell discovery unearths evolutionary clues

...to create multi-cellular structures in response to changing environmental conditions. Previously, there was almost no molecular data for social amoeba ?Dictyostelia ?which are a hugely diverse and ancient group. Social amoebas are a group of organisms with a genetic diversity that is greater than that of f...

Finding the right mix: A biomaterial blend library

...espective material, the cells around them react by changing shape, ultimately increasing or decreasing contact with the films. In the body, such cell-material dynamics are critically important to the outcome--determining whether a biomaterial leads to inflammation or abnormal cell growth, for example. The ...

Report highlights change in Canada's forests

...mprove its efficiency and meet the challenges of a changing marketplace. It continues to respond to these challenges by reducing costs, securing markets and focusing on new and improved products." Forests make up a significant part of Canada's economy, contributing $37.6 billion to the gross domestic product...

Plants' role in global warming re-examined

...ot taken into account plants' ability to adjust to changing conditions, according to researchers from Oak Ridge National Laboratory. In a Perspectives paper published April 28 by Science, a team led by Tony King cites ORNL findings suggesting that about 9 percent more carbon will be stored in plants and soil...

Cougar predation key to ecosystem health

...s deer and elk ?they also have indirect effects in changing their foraging behavior, in what has been called "the ecology of fear." That phenomenon, the scientists say, has been shown as vividly in Zion National Park as any other location they have ever studied. In Zion Canyon, which since the...

Fragmentation rapidly erodes Amazonian biodiversity

...the remarkable speed at which tree communities are changing in forest fragments. “Rainforest trees can li...e their seeds and pollen.? Fragmentation is also changing the dynamics and structure of the forest. Tree communities in fragments are highly unstable, losing...

Ocean temperature predicts spread of marine species

...nd diversity of adult species in a certain area by changing where larvae end up," O'Connor said. "It is important to understand how a fish population is replenished if we want to attempt to manage or conserve it." Using data from 72 marine species, including cod, herring, American lobster, horseshoe crabs ...

Novel EGFR ectodomain mutations in glioblastoma

...e ones commonly seen in other cancers: rather than changing the kinase domain, most of the gliobastoma-associated mutations mapped to the extracellular domain of the protein. These findings identify missense mutations in the extracellular domain of EGFR as a new way to oncogenically activate this protein. For...

How ants find their way

...s, using just very poor eyesight and confusing and changing natural landmarks. The research could have significant benefits in the development of autonomous robots and in furthering our understanding of basic animal learning processes. Scientists at the University of Sussex, funded by the Biotechnology and ...

PNAS study reveals why organs fail following massive trauma

...nventing new techniques along the way, the team is changing emergency room guidelines, building the foundation for earlier diagnosis of post-trauma organ failure and making possible the design of drugs to reverse it. Trauma has become a federal research priority because the survival rate has not improved in...

Twenty Years of Malaria Research: Outcomes and Perspectives

...a and research at the unit has been influential in changing WHO guidelines for malaria drug treatment. The reduction in the number of malaria cases has allowed the unit to focus on other health issues such as respiratory diseases. In addition, a surveillance network established in 1995 to monitor malaria i...

Special chip provides better picture of salmon health

...erformance of their stocks through methods such as changing their nutritional intake." So far the scientists have identified the genes and metabolic pathways which influence the most commercially important traits for the production of salmon. These are; the supply of contaminant-free highly unsaturated oil...

Adolescent but not adult hamsters are more aggressive on low dose of fluoxetine

...ddition, the researchers are investigating whether changing ratios of different subtypes of serotonin receptors ?some of which inhibit and some of which enhance aggression -- are implicated in the findings of higher aggression on low doses. ...

Extreme environment changes fish appearance

... On one hand, the fish may be more adaptable to changing conditions than thought. But refuge-bred fish might well die if reintroduced directly to Devil's Hole in an attempt to rebuild the population. And if an animal's form is so intimately connected to its environment, is it still the same fish if it is n...

Climate experts search for answers in the oceans

...s gives scientists a uniquely detailed view of the changing physical characteristics of ocean surfaces, but long-term series of satellite measurements are required in order to detect trends. The National Oceanographic Data Center (NODC), part of the United States?National Oceanic and Atmospheric Administr...

Motorola researchers develop selective sensors based on carbon nanotubes

... The peptides are made of 20 or so amino acids, so changing the sequence of amino acids allows the researchers to "tune the peptides and recognize different compounds," Tao said. "We developed a simple way to attach different peptides to different nanotubes." Erica Forzani, an ASU assistant research profes...

Biodegradable napkin -- featuring sensitive nanofibers -- may quickly detect biohazards

...erous biohazards and chemicals and would signal by changing color or through another effect when the antibodies attached to their targets. Users would simply wipe the napkin across a surface; if a biohazard were detected, the surface could be disinfected and retested with another napkin to be sure it was no l...

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