ScienceDaily: Strange Science News |
| Millipede border control better than ours Posted: 23 Dec 2011 06:14 AM PST An Australian zoologist has documented a remarkably sharp boundary between two species of millipede in northwest Tasmania. The boundary is more than 200 km long and apparently less than 100 m wide. |
| Viagra against heart failure: Researchers throw light on the mechanism Posted: 23 Dec 2011 06:14 AM PST Sildenafil, the active ingredient in Viagra, can alleviate heart problems, and now researchers can explain why. They studied dogs with diastolic heart failure, a condition in which the heart chamber does not sufficiently fill with blood. The scientists showed that sildenafil makes stiffened cardiac walls more elastic again. The drug activates an enzyme that causes the giant protein titin in the myocardial cells to relax. |
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