http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. (PhysOrg.com) -- Most of us, when we take our first science classes, learn that when things cool down, they shrink. (When they heat up, we learn, they usually expand.) However, water seems to be the exception to the rule. Instead of shrinking as it cools, this common liquid actually expands. In order to explain this phenomenon, some scientists have adopted the `mixture` model, which purports that low-density, ice-like components dominate due to cooling. Masakazu Matsumoto, at the Nagoya University Research Center for Materials Science in Japan, has a different idea. He describes his findings in Physical Review Letters: "Why Does Water Expand When It Cools?" http://www.physorg.com/news167040410.html Physics Fri, 17 Jul 2009 09:07:34 EST news167040410 (PhysOrg.com) -- ESA is about to launch the most sophisticated of Earth Observation satellites to investigate the Earth`s gravitational field with unprecedented resolution and accuracy. http://www.physorg.com/news155833444.html Space & Earth Mon, 09 Mar 2009 16:04:53 EST news155833444 Parents of children with genetic conditions may avoid the need to choose whether to undergo pre-natal testing or to abort future pregnancies by simply avoiding subsequent pregnancy altogether, a study has found. http://www.physorg.com/news153569300.html Medicine & Health Wed, 11 Feb 2009 10:10:31 EST news153569300 Internet network performance problems are not only annoying to users -- they are costly to businesses and network operators. But since the Internet has no built-in monitoring system, network problems often go unnoticed. http://www.physorg.com/news146753604.html Technology Mon, 24 Nov 2008 12:53:24 EST news146753604 Women who took the antidepressant fluoxetine during the first three months of pregnancy gave birth to four times as many babies with heart problems as women who did not and the levels were three times higher in women taking paroxetine. http://www.physorg.com/news146742845.html Medicine & Health Mon, 24 Nov 2008 09:54:05 EST news146742845 LSU scientist Huiming Bao, along with colleagues from UCLA and China, recently discovered some of the first atmospheric evidence in support of the `Snowball Earth` hypothesis. This theory suggests that Earth was entirely covered by ice during the Cryogenian period, which took place from about 790 to 630 million years ago. Their findings were reported in the May 22 issue of Nature. http://www.physorg.com/news135005681.html Space & Earth Fri, 11 Jul 2008 14:34:41 EST news135005681