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Scientists Now Know Why Some Cancers Become Malignant and Others Don’t

By Guest PostJanuary 7, 2011Health, Sciencecanadian cancer society, cancer cells, dr. gerardo ferbeyre, molecule, pml

Cancer cells reproduce by dividing in two, but a molecule known as PML limits how many times this can happen, according to researchers lead by Dr. Gerardo Ferbeyre of the University of Montreal’s Department of Biochemistry. The team proved that malignant cancers have problems with this molecule, meaning that in its absence they can continue to grow and eventually spread to other organs. Importantly, the presence of PML molecules can easily be detected, and could serve to diagnose whether a tumor is malignant or not. (more…)

Prehistoric Bird Used Club like Wings as Weapon

By Guest PostJanuary 5, 2011Scienceflightless birds, ibis family, prehistoric bird, skeletons of xenicibis

Long before the knights of medieval Europe wielded flails or martial artists brandished nunchucks, it appears that a flightless prehistoric bird used its own wings as a similar type of weapon in combat. (more…)

What Triggers Mass Extinctions? Study Shows How Invasive Species Stop New Life

By Guest PostJanuary 3, 2011Sciencealycia stigall, amphibians, archaeostraca, biodiversity loss, bivalve, brachiopods, collapse of earth marine life, crinoids, dunkleosteus, ecosystems, environmental crash, floweria, formation of a mountain range, history of life, invasive species, late devonian, late devonian oceans, leiopteria, leptodesma, lisa boush, mass extinction, new river channel, phylogenetic analysis, predatory crustacean, predatory fish, schizophoria, sea levels, sea lilies, trilobites, vicariance

*Collapse of Earth’s marine life 378 to 375 million years ago holds key*

An influx of invasive species can stop the dominant natural process of new species formation and trigger mass extinction events, according to research results published in the journal PLoS ONE.

The study of the collapse of Earth’s marine life 378 to 375 million years ago suggests that the planet’s current ecosystems, which are struggling with biodiversity loss, could meet a similar fate. (more…)

Fossilised Tooth Changes Human History?

By PravdaJanuary 2, 2011Scienceacheulo yabrudian cultural complex, avi gopher, aycc, cave, deciduous teeth, fossilised teeth, homo sapiens, human being, human evolution, Israel, israeli team, lower paleolithic, middle pleistocene, new evidence, qesem cave, university of tel aviv

A research article presented by an Israeli team has unearthed new evidence on the history of the human being – namely that Homo sapiens may be far, far older than we imagined. A research team from the University of Tel Aviv has discovered fossilised teeth 400,000 years old. (more…)

Genome of Extinct Siberian Cave-dweller Linked to Modern-day Humans

By Guest PostDecember 29, 2010Scienceancient dna, archaic humans, denisovan genome, neanderthal genome, siberian cave dweller

Sequencing of ancient DNA reveals new hominin population that is neither Neanderthal nor modern human

Researchers have discovered evidence of a distinct group of “archaic” humans existing outside of Africa more than 30,000 years ago at a time when Neanderthals are thought to have dominated Europe and Asia. But genetic testing shows that members of this new group were not Neanderthals, and they interbred with the ancestors of some modern humans who are alive today. (more…)

Mars Movie: I’m Dreaming of a Blue Sunset

By Guest PostDecember 26, 20103 commentsSciencedust particles, french author, jim bell, marcel proust, mark lemmon, mars, mars exploration rover opportunity, mars movie, martian moons, martian sky, martian sunset, moon phobos, opportunity, pancam, robotic emissaries, spirit, sun, sunset movie, sunset movie from mars

A new Mars movie clip gives us a rover’s-eye view of a bluish Martian sunset, while another clip shows the silhouette of the moon Phobos passing in front of the sun.

America’s Mars Exploration Rover Opportunity, carefully guided by researchers with an artistic sense, has recorded images used in the simulated movies.

These holiday treats from the rover’s panoramic camera, or Pancam, offer travel fans a view akin to standing on Mars and watching the sky. (more…)

NSF/NASA Scientific Balloon Launches From Antarctica

By Guest PostDecember 24, 2010Scienceantarctic summer, balloon array, dartmouth college, NASA, new mexico state university, sandwich wrap, scientific balloon, university of maryland, university of pennsylvania

This season’s annual scientific balloon campaign, which is held by NSF and NASA, will conduct varied experiments using ultra-sophisticated instrumentation.

NASA and the National Science Foundation launched a scientific balloon on Monday, December 20, Eastern Standard time, to study the effects of cosmic rays on Earth. It was the first of five scientific balloons scheduled to launch from Antarctica in December.

The Cosmic Ray Energetics And Mass (CREAM VI) experiment was designed and built at the University of Maryland. CREAM is investigating high-energy cosmic-ray particles that originated from distant supernovae explosions in the Milky Way and reached Earth. Currently, CREAM VI is floating 126,000 ft above Antarctica with nominal science operations. (more…)

Russian Nuclear Industry to Conquer Country of Pyramids

By PravdaDecember 22, 2010Politics, Science, Technologyalexandria, Bangladesh, bushehr npp, egypt, electricity, gigacalories, gw, haripur, hydropower, India, kudankulam, nuclear power plant, power plant, rachid mohamed rachid, rivers, rosatom, russia, Technology, thermal power, Venezuela, viktor khristenko, vladimir putin, West Bengal

Russia is ready to build a nuclear power plant in Egypt at its own expense, to manage the plant, and even find markets for the electricity. Early next year Egypt is expected to announce a tender for the construction of nuclear power plant with the capacity of 1 GW 150 km from Alexandria. Russia’s Rosatom will participate in the tender.

A meeting of Russian-Egyptian intergovernmental commission on trade, economic and scientific-technical cooperation was held on Monday. From the Russian side it was chaired by the Minister of Industry and Trade Viktor Khristenko. (more…)

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