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Evidence For Atmospheric Water Loss On Venus

Evidence For Atmospheric Water Loss On Venus

There is new evidence that the solar wind has stripped away significant quantities of water from Venus.  The SPICAV and VIRTIS instruments carried by the Venus Express spacecraft have been used to measure concentrations of water vapor in the Venusian atmosphere at altitudes ranging from the lowest 10 km up to 110 km, high above the cloud tops.Studies led by scientists from Belgium and Russia have found that the ratio of heavy water, which contains the isotope deuterium instead of hydrogen, to normal water is nearly twice as high above the clouds compared to its value in the lower atmosphere. 

M31 And Ultraviolet Andromeda

M31 And Ultraviolet Andromeda

NASA's Swift satellite has acquired a new high-resolution view of a neighboring spiral galaxy; M31 in the constellation Andromeda, the largest and closest spiral galaxy to our own.M31, also known as the Andromeda Galaxy, is more than 220,000 light-years across and lies 2.5 million light-years away. On a clear, dark night, the galaxy is faintly visible as a misty patch to the naked eye.Between May 25 and July 26, 2008, Swift's Ultraviolet/Optical Telescope (UVOT) acquired 330 images of M31 at wavelengths of 192.8, 224.6, and 260 nanometers. The images represent a total exposure time of 24 hours. 

The Mystery Of The Caistor Skeleton

The Mystery Of The Caistor Skeleton

The buried town of Venta Icenorum at Caistor St Edmund in Norfolk is one of the most important, though least understood, Roman sites in Britain.Caistor lies in the former territory of the Iceni, the tribe of Boudica Celts who famously rebelled against Roman rule in AD 60/61. The survey revealed numerous circular features that apparently predate the Roman town.  These are probably of prehistoric date, and suggest that Caistor was the site of a large settlement before the Roman town was built. This had always been suspected because of numerous chance finds of late Iron Age coins and metalwork, but until the survey was carried out there had never been any evidence of buildings.

Animal Rights Activists Hurt Science And Aren't All That Great For Animals Either

Animal Rights Activists Hurt Science And Aren't All That Great For Animals Either

There have been increasingly violent attacks against scientists by animal rights activists in the last few years and partisan groups that can recite the name of every abortion provider killed by extreme pro-life people haven't taken much of a stand against violence done by people who inhabit their sphere.Two commentaries in The Journal of Neuroscience this month outline the efforts by The Society for Neuroscience and the research community to ensure humane and responsible animal research.

Two-Minute Drill For Water Quality In Space

Two-Minute Drill For Water Quality In Space

How would you know if your water in space were infected with something?  Water is easy enough to clean but it requires some precision and current methods only examine water cleanliness after the fact.   University of Utah chemists developed a two-minute water quality monitoring method that just started six months of tests aboard the International Space Station.The new method involves sampling space station or space shuttle galley water with syringes, forcing the water through a chemical-imbued disk-shaped membrane, and then reading the color of the membrane with a commercially available, handheld color sensor normally used to measure the color and glossiness of automobile paint.

Tiny Ancient Gemstone With Alexander The Great Portrait Unearthed In Israel

Tiny Ancient Gemstone With Alexander The Great Portrait Unearthed In Israel

There's been a surprising archaeological discovery at Tel Dor in Israel, a place that was only on the periphery of the Hellenistic world; a gemstone engraved with a portrait of Alexander the Great. Alexander was probably the first Greek to commission artists to depict his image – as part of a personality cult that was transformed into a propaganda tool. Rulers and dictators have implemented this form of propaganda ever since.   The excavations were done by an archaeological team directed by Dr. Ayelet Gilboa of the University of Haifa and Dr. Ilan Sharon of the Hebrew University of Jerusalem.

Background Television - Even Worse Than Common Sense Suggests

Background Television - Even Worse Than Common Sense Suggests

Over one third of American pre-schoolers live in homes where the television is on most of the time, even if no one's watching, and a new study says the effect of background TV on interactions between parents and young children is definitely negative.The researchers studied about 50 1-, 2-, and 3-year-olds, each of whom was with one parent, at a university child study center.   Half of the one-hour session, parents and children were in a playroom without TV; in the other half-hour, parents chose an adult-directed program to watch , like Jeopardy. The researchers observed how often parents and children talked with each other, how actively involved the parents were in their children's play, and whether parents and children responded to each other's questions and suggestions.

In Plants, Polyploidy And Genomic Change Can Improve Evolutionary Fitness

In Plants, Polyploidy And Genomic Change Can Improve Evolutionary Fitness

A mystery of evolution is why an extra chromosome can be common across plants and animals yet have such drastically different results.    A human with an extra chromosome may have Down syndrome while a cat may just be a male Calico.  And plants may not only not have a negative effect, it may be downright beneficial

El Niño Not Stronger Because Of Global Warming, Says Researcher, But There Is A Flu Connection

El Niño Not Stronger Because Of Global Warming, Says Researcher, But There Is A Flu Connection

Contrary to short-term consensus beliefs, El Niño has not been getting stronger because of global warming, says  Benjamin Giese, a professor of oceanography at Texas A&M who specializes in ocean modeling, but he found a link between El Niño and the severe flu pandemic 91 years ago.Coincidence?   The 1918 El Niño was apparently one of the strongest of the 20th century but how is it relevant to flu?

A Super Bedsheet, Though You Won't Sleep On It

A Super Bedsheet, Though You Won't Sleep On It

Astrid Skreosen worked for many years as an auxiliary nurse in the maternity ward in Skien Hospital and became fed up with the little mats which were supposed to lie under women who were giving birth that were intended to soak up waste products and fluids so she began to look into the possibility of producing a specially modified super-absorbent bed sheet.After stumbling around in the dark for a while with inventors’ consultants and patent offices, she rang SINTEF (Skandinavias største uavhengige forskningsorganisasjon) Materials and Chemistry and spoke with Per Stenstad.

Molecular Evolution - 'Irreducible Complexity' Gets Reduced

Molecular Evolution - 'Irreducible Complexity' Gets Reduced

An international team of researchers say they have discovered a blueprint for a general understanding of the evolution of the "machinery" of our cells providing more evidence, at the molecular level, in support of one of the key tenets of Darwin's Theory of Evolution.A non-Darwinian explanation, from believers of Intelligent Design, proposed these complex machines to be "irreducibly complex". In other words they are so neatly complex and complete that they couldn't have evolved but rather must have been designed by an intelligent entity.

New Radiation Belt Discovered Around Saturn

New Radiation Belt Discovered Around Saturn

The Cassini spacecraft's Magnetospheric Imaging instrument (MIMI) has detected a temporary radiation belt around Dione, one of the moons of Saturn.  The discovery will be presented at the European Planetary Science Congress in Potsdam by Dr Elias Roussos on Monday, September 14th.Radiation belts, like Earth’s Van Allen belts, have been discovered at Jupiter, Saturn, Uranus and Neptune but it has only been possible to observe the variability of their intensity at Earth and Jupiter.   Cassini has been orbiting Saturn for more than five years so it has been possible to assess changes in Saturn’s radiation belts.