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Thu, 23 Oct 2014 19:35:39 EDT
Without swift influx of substantial aid, Ebola epidemic in Africa poised to explode
The Ebola virus disease epidemic already devastating swaths of West Africa will likely get far worse in the coming weeks and months unless international commitments are significantly and immediately increased, new research predicts.
Thu, 23 Oct 2014 15:41:11 EDT
3-D map of the adolescent universe
Using extremely faint light from galaxies 10.8-billion light years away, scientists have created one of the most complete, three-dimensional maps of a slice of the adolescent universe. The map shows a web of hydrogen gas that varies from low to high density at a time when the universe was made of a fraction of the dark matter we see.
Thu, 23 Oct 2014 14:23:14 EDT
Desert streams: Deceptively simple
Volatile rainstorms drive complex landscape changes in deserts, particularly in dryland channels, which are shaped by flash flooding. Paradoxically, such desert streams have surprisingly simple topography with smooth, straight and symmetrical form that until now has defied explanation.
Thu, 23 Oct 2014 14:23:12 EDT
How ferns adapted to one of Earth's newest and most extreme environments
Ferns are believed to be 'old' plant species -- some of them lived alongside the dinosaurs, over 200 million years ago. However, a group of Andean ferns evolved much more recently: their completely new form and structure (morphology) arose and diversified within the last 2 million years. This novel morphology seems to have been advantageous when colonising the extreme environment of the high Andes.
Thu, 23 Oct 2014 14:23:10 EDT
Designer 'barrel' proteins created
Designer proteins that expand on nature's own repertoire, created by a team of chemists and biochemists, are described in a new paper. Proteins are long linear molecules that fold up to form well-defined 3D shapes. These 3D molecular architectures are essential for biological functions such as the elasticity of skin, the digestion of food, and the transport of oxygen in blood.
Thu, 23 Oct 2014 14:23:08 EDT
Molecular structure of water at gold electrodes revealed
Researchers have recorded the first observations of the molecular structure of liquid water at a gold electrode under different battery charging conditions.
Thu, 23 Oct 2014 14:23:06 EDT
Florida lizards evolve rapidly, within 15 years and 20 generations
Scientists working on islands in Florida have documented the rapid evolution of a native lizard species -- in as little as 15 years -- as a result of pressure from an invading lizard species, introduced from Cuba.
Thu, 23 Oct 2014 14:23:04 EDT
Highest altitude archaeological sites in the world explored in the Peruvian Andes: Survival in extreme environments
Research conducted at the highest-altitude Pleistocene archaeological sites yet identified in the world sheds new light on the capacity of humans to survive in extreme environments. The findings were taken from sites in the Pucuncho Basin, located in the Southern Peruvian Andes.
Thu, 23 Oct 2014 14:22:08 EDT
A gut bacterium that attacks dengue and malaria pathogens and their mosquito vectors
Just like those of humans, insect guts are full of microbes, and the microbiota can influence the insect's ability to transmit diseases. A new study reports that a bacterium isolated from the gut of an Aedes mosquito can reduce infection of mosquitoes by malaria parasites and dengue virus. The bacterium can also directly inhibit these pathogens in the test tube, and shorten the life span of the mosquitoes that transmit both diseases.
Thu, 23 Oct 2014 13:22:20 EDT
Sleep difficulties common among toddlers with psychiatric disorders
Sleep difficulties -- particularly problems with falling asleep -- were very common among toddlers and preschool-aged children who were receiving clinical treatment for a wide range of psychiatric disorders, a study has found. "This study is a great reminder that it's critical for mental health providers working with young children and their families to ask about children's sleep," said one expert.
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