ScienceDaily: Top News |
- Flatworm flouts fundamental rule of biology: Worm regenerates without centrosome, a structure long thought necessary for cell division
- World’s first primate chimeric offspring produced: Research demonstrates not all embryonic stem cells are equal
- Down to the wire for silicon: Researchers create a wire four atoms wide, one atom tall
- Scientists 'hijack' bacterial immune system
- Graphene rips follow rules
- Couch potato or elite athlete? A happy medium keeps colds at bay
- Researcher's photoacoustic device finds cancer cells before they become tumors, study suggests
- Men and women have major personality differences: New report suggests previous measurements have underestimated variation between the sexes
| Posted: 05 Jan 2012 02:42 PM PST A tiny, freshwater flatworm found in ponds and rivers around the world that has long intrigued scientists for its remarkable ability to regenerate has now added a new wrinkle to biology.  |
| Posted: 05 Jan 2012 01:47 PM PST Scientists have shed new light on how early embryonic stem cells develop and take part in formation of the primate species. The research has also resulted in the first successful birth of chimeric monkeys -- monkeys developed from stem cells taken from two separate embryos.  |
| Down to the wire for silicon: Researchers create a wire four atoms wide, one atom tall Posted: 05 Jan 2012 01:18 PM PST The smallest wires ever developed in silicon -- just one atom tall and four atoms wide -- have been shown by a team of researchers to have the same current-carrying capability as copper wires.  |
| Scientists 'hijack' bacterial immune system Posted: 05 Jan 2012 11:58 AM PST The knowledge that bacteria possess adaptable immune systems that protect them from individual viruses and other foreign invaders is relatively new to science, and researchers across the globe are working to learn how these systems function and to apply that knowledge in industry and medicine. Now, a team of researchers has discovered how to harness this bacterial immune system to selectively target and silence genes.  |
| Posted: 05 Jan 2012 11:57 AM PST Researchers may give science and industry a new way to manipulate graphene, which naturally rips along armchair and zigzag paths.  |
| Couch potato or elite athlete? A happy medium keeps colds at bay Posted: 05 Jan 2012 08:21 AM PST Battling colds and doing (or pledging to do) more exercise are familiar activities for most of us in January. But different levels of exercise can actually significantly increase or decrease your chances of catching a respiratory infection, say experts.  |
| Researcher's photoacoustic device finds cancer cells before they become tumors, study suggests Posted: 05 Jan 2012 08:20 AM PST Researchers are one step closer to melanoma cancer detection at the cellular level, long before tumors have a chance to form. Commercial production of a device that measures melanoma using photoacoustics, or laser-induced ultrasound, will soon be available to scientists and academia for cancer studies. The commercial device also will be tested in clinical trials to provide the data required to obtain US Food and Drug Administration approval for early diagnosis of metastatic melanoma and other cancers.  |
| Posted: 04 Jan 2012 02:48 PM PST Men and women have large differences in personality, according to a new study. The existence of such differences, and their extent, has been a subject of much debate, but the authors of the new report describe a new method for measuring and analyzing personality differences that they argue is more accurate than previous methods.  |
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