- Small volcanic eruptions partly explain 'warming hiatus'
- Special delivery: Hitchhiking microparticles deliver drugs directly
- Hello people, goodbye soil: Humans erode soil 100 times faster than nature
- Study pinpoints autism-linked protein for sculpting brain connections
Posted: 09 Jan 2015 10:28 AM PST
The "warming hiatus" that has occurred over the last 15 years has been caused in part by small volcanic eruptions. Scientists have long known that volcanoes cool the atmosphere because of the sulfur dioxide that is expelled during eruptions. Droplets of sulfuric acid that form when the gas combines with oxygen in the upper atmosphere can persist for many months, reflecting sunlight away from Earth and lowering temperatures at the surface and in the lower atmosphere. New research further identifies observational climate signals caused by recent volcanic activity.
Posted: 07 Jan 2015 12:10 PM PST
Posted: 07 Jan 2015 12:07 PM PST
In North America, European colonization and agriculture led to as much soil loss in just decades as would have occurred naturally in thousands of years, new research shows. Scientists have, for the first time, precisely quantified natural rates of erosion in ten US river basins to compare with modern ones.
Posted: 06 Jan 2015 02:12 PM PST
Shortly after birth, human brains expand rapidly with the experience of an entirely new world. During this period, neurons in the brain compete with one another to form lasting connections, called synapses. A new study provides a close-up of synapse refinement and identifies a protein that is crucial in this process. Disruptions in the protein, called hevin, have previously been linked to autism, depression and suicide.
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