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Study identifies how tamoxifen stimulates uterine cell growth and cancer
Published Jul 4, 2009 - 9:07:10 AM
UCSF researchers have identified a new "feed-forward" pathway linking estrogen receptors in the membrane of the uterus to a process that increases local estrogen levels and promotes cell growth.
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Many characteristics of Mars, including ice, are similar to Earth, paper says
Published Jul 4, 2009 - 8:04:54 AM
Mars gets as far as 250 million miles away, but many parts of it closely resemble places on Earth, including its landscape, history of water, soil and even its weather, says a Texas A&M University researcher in the current issue of "Science" magazine.
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Coolest spacecraft ever in orbit around L2
Published Jul 4, 2009 - 7:58:55 AM
Last night, the detectors of Planck's High Frequency Instrument reached their amazingly low operational temperature of -273.05 degrees C, making them the coldest known objects in space. The spacecraft has also just entered its final orbit around the second Lagrange point of the Sun-Earth system, L2.
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Volcano Eruption From Space: Sarychev Filmed By Space Station (VIDEO)
Full story: Huffington Post
Schizophrenia linked for first time to chromosome region in study led by Stanford scientists
Published Jul 2, 2009 - 8:12:30 AM
Stanford University School of Medicine scientists have played a major role in an international effort that has shown, for the first time, that modern genetic technologies can solve the riddle of how gene variations lead to schizophrenia.
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Plants Put Limit on Ice Ages
Published Jul 2, 2009 - 7:04:42 AM
When glaciers advanced over much of the Earth's surface during the last ice age, what kept the planet from freezing over entirely? This has been a puzzle to climate scientists because leading models have indicated that over the past 24 million years geological conditions should have caused carbon dioxide levels in the atmosphere to plummet, possibly leading to runaway "icehouse" conditions. Now researchers writing in the July 2, 2009, Nature report on the missing piece of the puzzle - plants.
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Lighting revolution forecast by top scientist
Published Jul 2, 2009 - 7:01:45 AM
New developments in a substance which emits brilliant light could lead to a revolution in lighting for the home and office in five years, claims a leading UK materials scientist, Professor Colin Humphreys of Cambridge University. The source of the huge potential he foresees, gallium nitride (GaN), is already used for some lighting applications such as camera flashes, bicycle lights, mobile phones and interior lighting for buses, trains and planes. But making it possible to use GaN for home and office lighting is the Holy Grail. If achieved, it could reduce the typical electricity consumption for lighting of a developed country by around 75% while delivering major cuts in carbon dioxide emissions from power stations, and preserving fossil fuel reserves.
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Earth's most prominent rainfall feature creeping northward
Published Jul 2, 2009 - 6:59:29 AM
The rain band near the equator that determines the supply of freshwater to nearly a billion people throughout the tropics and subtropics has been creeping north for more than 300 years, probably because of a warmer world, according to research published in the July issue of Nature Geoscience.
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Cosmic Fireworks
Published Jul 2, 2009 - 6:58:27 AM
Even the most spectacular Fourth of July fireworks display pales in comparison to what takes place in nature. In a matter of seconds, a supernova releases more energy than the Sun radiates in its 10 billion-year life span, and the explosive event can briefly outshine its host galaxy. Neutron stars, the remnants of such "cosmic fireworks," exhibit the strongest magnetic fields observed in the universe.
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Intense heat killed the Universe's would-be galaxies, researchers say
Published Jul 1, 2009 - 11:58:13 AM
Our Milky Way galaxy only survived because it was already immersed in a large clump of dark matter which trapped gases inside it, scientists led by Durham University's Institute for Computational Cosmology (ICC) found.
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International Year of Astronomy 2009 raises millions of eyes to the skies
Published Jul 1, 2009 - 8:51:41 AM
As the International Year of Astronomy 2009 (IYA2009) reaches its six-month milestone, over a million people have already looked at the sky through a telescope for the first time, and even more have newly engaged in astronomy. This is just one of many achievements, as countless ongoing projects and planned initiatives indicate that the IYA2009 is well on the way towards achieving many of its goals.
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Study of Flower Color Shows Evolution in Action
Published Jun 29, 2009 - 11:15:47 AM
Scientists at UC Santa Barbara have zeroed in on the genes responsible for changing flower color, an area of research that began with Gregor Mendel's studies of the garden pea in the 1850's.
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Site for Alcohol's Action in the Brain Discovered
Published Jun 29, 2009 - 7:38:32 AM
Alcohol's inebriating effects are familiar to everyone. But the molecular details of alcohol's impact on brain activity remain a mystery. A new study by researchers at the Salk Institute for Biological Studies brings us closer to understanding how alcohol alters the way brain cells work.
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New NOAA Satellite Reaches Orbit
Published Jun 29, 2009 - 7:34:02 AM
NOAA and NASA officials announced a new Geostationary Operational Environmental Satellite (GOES), launched tonight, successfully reached orbit, joining three other GOES spacecraft that help NOAA forecasters track life-threatening weather and solar storms.
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Researchers Contribute Climate Model to Study That Finds Some Winds Decreasing
Published Jun 27, 2009 - 10:06:14 AM
Declining wind speeds in parts of the United States could impact more than the wind power industry, say Iowa State University climate researchers.
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Scientists' Drill Hits Magma: Only Third Time on Record
Published Jun 27, 2009 - 7:33:54 AM
Scientists drilling a borehole deep into Iceland's rocky crust to explore new methods of using geothermal energy hit a major roadblock on Thursday: Their drill ran into molten rock at a depth of 6,900 feet.
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Space Telescope Science Institute Joins the Search for Other Earths in Space
Published Jun 25, 2009 - 7:02:51 AM
The Space Telescope Science Institute (STScI) in Baltimore, Md., is partnering on a historic search for Earth-size planets around other stars. STScI is the data archive center for NASA's Kepler mission, a spacecraft that is undertaking a survey for Earth-size planets in our region of the galaxy. The spacecraft sent its first raw science data to STScI on June 19.
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Space Shuttle Science Shows How 1908 Tunguska Explosion Was Caused by a Comet
Published Jun 25, 2009 - 6:59:35 AM
The mysterious 1908 Tunguska explosion that leveled 830 square miles of Siberian forest was almost certainly caused by a comet entering the Earth's atmosphere, says new Cornell University research. The conclusion is supported by an unlikely source: the exhaust plume from the NASA space shuttle launched a century later.
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Galaxies Coming of Age in Cosmic Blobs
Published Jun 25, 2009 - 6:57:44 AM
The "coming of age" of galaxies and black holes has been pinpointed, thanks to new data from NASA's Chandra X-ray Observatory and other telescopes. This discovery helps resolve the true nature of gigantic blobs of gas observed around very young galaxies.
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Salt Finding from NASA's Cassini Hints at Ocean within Saturn Moon
Published Jun 25, 2009 - 6:00:00 AM
For the first time, scientists working on NASA's Cassini mission have detected sodium salts in ice grains of Saturn's outermost ring. Detecting salty ice indicates that Saturn's moon Enceladus, which primarily replenishes the ring with material from discharging jets, could harbor a reservoir of liquid water -- perhaps an ocean -- beneath its surface.
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