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- Nearby galaxy is a 'fossil' from the early universe
- Humans have a nose for gender: Chemical cues influence perceptions of movement as more masculine or feminine
- Experimental drug prolongs life span in mice
- Stem cell therapy regenerates heart muscle damaged from heart attacks in primates
- Length of exoplanet day measured for first time: Spin of Beta Pictoris b measured
- Simple tests of physical capability in midlife linked with survival
- Mathematicians trace source of Rogers-Ramanujan identities, find algebraic gold
- Interactions between humans and scavengers have been decisive in human evolution
| Nearby galaxy is a 'fossil' from the early universe Posted: 01 May 2014 10:26 AM PDT Scientists analyzed the chemical elements in the faintest known galaxy, called Segue 1, and determined that it is effectively a fossil galaxy left over from the early universe. Stars form from gas clouds and their composition mirrors the chemical composition of the galactic gas from which they were born. |
| Posted: 01 May 2014 09:34 AM PDT The human body produces chemical cues that communicate gender to members of the opposite sex, according to new research. Whiffs of the active steroid ingredients (androstadienone in males and estratetraenol in females) influence our perceptions of movement as being either more masculine or more feminine. The effect, which occurs completely without awareness, depends on both our biological sex and our sexual orientations. |
| Experimental drug prolongs life span in mice Posted: 01 May 2014 08:23 AM PDT Scientists newly identified a protein's key role in cell and physiological aging and have developed an experimental drug that inhibits the protein's effect and quadrupled the lifespan in a mouse model of accelerated aging. Their lungs and vascular system were protected from rapid aging. The experimental drug could potentially be used to treat human diseases that cause accelerated aging such as chronic kidney disease, diabetes and HIV infection and even extend someone's healthy life. |
| Stem cell therapy regenerates heart muscle damaged from heart attacks in primates Posted: 30 Apr 2014 10:30 AM PDT Heart cells created from human embryonic stem cells successfully restored damaged heart muscles in monkeys, researchers report. Stem-cell derived heart muscle cells infiltrated into damaged heart tissue, assembled muscle fibers and began to beat in synchrony with macaque heart cells. Scientists are working to reduce the risk of heart rhythm problems and to see if pumping action improves. |
| Length of exoplanet day measured for first time: Spin of Beta Pictoris b measured Posted: 30 Apr 2014 10:28 AM PDT Observations from ESO's Very Large Telescope (VLT) have, for the first time, determined the rotation rate of an exoplanet. Beta Pictoris b has been found to have a day that lasts only eight hours. This is much quicker than any planet in the planetary system — its equator is moving at almost 100,000 kilometers per hour. This new result extends the relation between mass and rotation seen in the solar system to exoplanets. |
| Simple tests of physical capability in midlife linked with survival Posted: 29 Apr 2014 03:48 PM PDT Low levels of physical capability (in particular weak grip strength, slow chair rise speed and poor standing balance performance) in midlife can indicate poorer chances of survival over the next 13 years, while greater time spent in light intensity physical activity each day is linked to a reduced risk of developing disability in adults with or at risk of developing knee osteoarthritis, suggest two papers. |
| Mathematicians trace source of Rogers-Ramanujan identities, find algebraic gold Posted: 29 Apr 2014 09:58 AM PDT Mathematicians have found a framework for the celebrated Rogers-Ramanujan identities and their arithmetic properties, solving another long-standing mystery stemming from the work of Indian math genius Srinivasa Ramanujan. The findings yield a treasure trove of algebraic numbers and formulas to access them. |
| Interactions between humans and scavengers have been decisive in human evolution Posted: 29 Apr 2014 05:52 AM PDT Scientists have concluded that the interactions that human have kept for millennia with scavengers like vultures, hyenas and lions, have been crucial in the evolution and welfare of humankind. The results of the study note that the extinction of large carnivorous mammals threatens to wipe out the many services that they provide us. |
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