ScienceDaily: Top Science News |
- Where do muscles get their power? Fifty-year-old assumptions about strength muscled aside
- Induced seismicity? Recent spike of earthquakes in the central and eastern U.S. may be linked to human activity
- Air pollution responsible for more than 2 million deaths worldwide each year, experts estimate
- Individual atoms imaged in a living catalytic reaction
| Where do muscles get their power? Fifty-year-old assumptions about strength muscled aside Posted: 12 Jul 2013 07:28 AM PDT New understanding of where muscles get their power from turns 50 years of strength belief on its head. New insight could aid everything from bodybuilding to cardiac care.  |
| Posted: 12 Jul 2013 06:52 AM PDT The number of earthquakes has increased dramatically over the past few years within the central and eastern United States. More than 300 earthquakes above a magnitude 3.0 occurred in the three years from 2010-2012, compared with an average rate of 21 events per year observed from 1967-2000. This increase in earthquakes prompts two important questions: Are they natural, or human-made? And what should be done in the future as we address the causes and consequences of these events to reduce associated risks? U.S. Geological Survey scientists have been analyzing the changes in the rate of earthquakes as well as the likely causes, and they have some answers.  |
| Air pollution responsible for more than 2 million deaths worldwide each year, experts estimate Posted: 12 Jul 2013 05:44 AM PDT More than two million deaths occur globally each year as a direct result of human-caused outdoor air pollution, a new study has found. In addition, while it has been suggested that a changing climate can exacerbate the effects of air pollution and increase death rates, the study shows that this has a minimal effect and only accounts for a small proportion of current deaths related to air pollution.  |
| Individual atoms imaged in a living catalytic reaction Posted: 12 Jul 2013 05:43 AM PDT Groundbreaking new electron microscopy technology is allowing researchers to observe and analyze single atoms, small clusters and nanoparticles in dynamic in-situ experiments for the first time.  |
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