ScienceDaily: Latest Science News |
- NASA's UARS satellite re-enters Earth's atmosphere
- Treatment of rectal cancer varies enormously between different European countries
- Engineers simulate large earthquake on curved bridge
- University students who use cannabis, tobacco and alcohol take too many non-prescribed drugs, study suggests
- Finding clues as to how early man adapted to marine environments
- Corruption is slowing economic growth in low-income countries
- Insight into the architecture of life: Researchers discover supporting pillars of the structure of cellular power plants
| NASA's UARS satellite re-enters Earth's atmosphere Posted: 24 Sep 2011 02:26 PM PDT NASA's decommissioned Upper Atmosphere Research Satellite (UARS) fell back to Earth between 11:23 p.m. EDT Friday, Sept. 23 and 1:09 a.m. Sept. 24, 20 years and nine days after its launch on a 14-year mission that produced some of the first long-term records of chemicals in the atmosphere. The precise re-entry time and location of debris impacts have not been determined. During the re-entry period, the satellite passed from the east coast of Africa over the Indian Ocean, then the Pacific Ocean, then across northern Canada, then across the northern Atlantic Ocean, to a point over West Africa. The vast majority of the orbital transit was over water, with some flight over northern Canada and West Africa.  |
| Treatment of rectal cancer varies enormously between different European countries Posted: 24 Sep 2011 07:25 AM PDT First results from an international comparison of the care of patients with rectal cancer have shown there are substantial differences in the use of chemotherapy and radiotherapy between European countries. The European Registration of Cancer Care study compared the treatment of 6,597 patients in Sweden, Norway, Denmark and the Netherlands who were diagnosed with rectal cancer between 2008 and 2009.  |
| Engineers simulate large earthquake on curved bridge Posted: 23 Sep 2011 07:42 AM PDT Six full-size pickup trucks took a wild ride on a 16-foot-high steel bridge when it shook violently in a series of never-before-conducted experiments to investigate the seismic behavior of a curved bridge with vehicles in place. The 145-foot-long, 162-ton steel and concrete bridge was built atop four large, 14-foot by 14-foot, hydraulic shake tables.  |
| Posted: 23 Sep 2011 06:50 AM PDT A Spanish study on the consumption of drugs amongst university students confirms that non-prescribed drug abuse amongst those who use cannabis, tobacco and alcohol could be considered "another form of multi-drug consumption."  |
| Finding clues as to how early man adapted to marine environments Posted: 23 Sep 2011 06:50 AM PDT Norway's rugged coast has perhaps no better analogue than the glacially scoured shoreline of Patagonia, 13,000 kilometers away and a hemisphere apart. The two countries' similarities, isolated from each other, make them perfect natural laboratories for archaeologists interested in how early man lived in and adapted to marine environments.  |
| Corruption is slowing economic growth in low-income countries Posted: 23 Sep 2011 06:50 AM PDT A significant increase in incidents of corruption is undermining the benefits of economic liberalization, according to a recent systematic review. Drawing on over 100 studies and 596 estimates on low-income and other countries, the review documents the economic impacts of corruption, and concludes that practices such as nepotism, bribery and embezzlement are slowing economic growth directly and indirectly through adverse effects on human capital and public finance.  |
| Posted: 23 Sep 2011 06:50 AM PDT Scientists have discovered a new mechanism that is of central significance for the architecture and functioning of mitochondria, known as the power plants of the cell. With the help of chemical reactions that take place on their inner membranes, these organelles convert food into energy for the metabolism and growth of the cell. The inner mitochondrial membrane features a characteristic architecture that is essential for its role as an energy transducer. Errors in the structure of the mitochondria can lead to serious illnesses in humans, particularly illnesses affecting the muscles and nerves.  |
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