ScienceDaily: Most Popular News

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• Magnets for fusion energy: High-temperature superconductor achieves new world record for electrical current
• Why do men prefer nice women? Responsiveness and desire
• Total darkness at night key to success of breast cancer therapy, study shows
• Bacteria manipulate salt to build shelters to hibernate
• Steam energy from the sun: New spongelike structure converts solar energy into steam
• Saharan dust is key to formation of Bahamas' Great Bank, study finds
• Earlier Stone Age artifacts found in Northern Cape of South Africa
• How to power California with wind, water and sun
• Four-billion-year-old chemistry in cells today
• 3-D image of Paleolithic child's skull reveals trauma, brain damage
• Physicians seeing increase in brown recluse spider bites
• Researchers eliminate HIV from cultured human cells for first time

Magnets for fusion energy: High-temperature superconductor achieves new world record for electrical current Posted: 25 Jul 2014 08:07 AM PDT Scientists have achieved an electrical current of 100,000 amperes, which is by far the highest in the world, by using the new idea of assembling the state-of-the-art yttrium-based high-temperature superconducting tapes to fabricate a large-scale magnet conductor.

Why do men prefer nice women? Responsiveness and desire Posted: 25 Jul 2014 08:07 AM PDT Does responsiveness increase sexual desire in the other person? Do men perceive responsive women as more attractive, and does the same hold true for women's perceptions of men? A recent study undertook to answer those questions.

Total darkness at night key to success of breast cancer therapy, study shows Posted: 25 Jul 2014 05:04 AM PDT Exposure to light at night, which shuts off nighttime production of the hormone melatonin, renders breast cancer completely resistant to tamoxifen, a widely used breast cancer drug, says a new study. Melatonin by itself delayed the formation of tumors and significantly slowed their growth, researchers report, but tamoxifen caused a dramatic regression of tumors in animals with either high nighttime levels of melatonin during complete darkness or those receiving melatonin supplementation during dim light at night exposure.

Bacteria manipulate salt to build shelters to hibernate Posted: 25 Jul 2014 05:03 AM PDT For the first time, researchers have detected an unknown interaction between microorganisms and salt. When Escherichia coli cells are introduced into a droplet of salt water that is left to dry, bacteria manipulate the sodium chloride crystallization to create biomineralogical biosaline 3-D morphologically complex formations, where they hibernate. Afterwards, simply by rehydrating the material, bacteria are revived. The discovery was made by chance with a home microscope.

Steam energy from the sun: New spongelike structure converts solar energy into steam Posted: 24 Jul 2014 06:39 PM PDT A new material structure generates steam by soaking up the sun. The structure -- a layer of graphite flakes and an underlying carbon foam -- is a porous, insulating material structure that floats on water. When sunlight hits the structure's surface, it creates a hotspot in the graphite, drawing water up through the material's pores, where it evaporates as steam. The brighter the light, the more steam is generated.

Saharan dust is key to formation of Bahamas' Great Bank, study finds Posted: 24 Jul 2014 03:29 PM PDT Saharan dust played a major role in the formation of the Bahamas islands, a new study suggests. Researchers showed that iron-rich Saharan dust provides the nutrients necessary for specialized bacteria to produce the island chain's carbonate-based foundation. Persistent winds across Africa's 3.5-million square mile Sahara Desert lifts mineral-rich sand into the atmosphere where it travels the nearly 5,000-mile northwest journey towards the U.S. and Caribbean.

Earlier Stone Age artifacts found in Northern Cape of South Africa Posted: 24 Jul 2014 02:21 PM PDT Excavations at an archaeological site at Kathu in the Northern Cape province of South Africa have produced tens of thousands of Earlier Stone Age artifacts, including hand axes and other tools.

How to power California with wind, water and sun Posted: 24 Jul 2014 11:43 AM PDT New research outlines the path to a possible future for California in which renewable energy creates a healthier environment, generates jobs and stabilizes energy prices.

Four-billion-year-old chemistry in cells today Posted: 24 Jul 2014 06:40 AM PDT Parts of the primordial soup in which life arose have been maintained in our cells today according to scientists. Research has revealed how cells in plants, yeast and very likely also in animals still perform ancient reactions thought to have been responsible for the origin of life -- some four billion years ago.

3-D image of Paleolithic child's skull reveals trauma, brain damage Posted: 23 Jul 2014 11:17 AM PDT Three-dimensional imaging of a Paleolithic child's skull reveals potentially violent head trauma that likely lead to brain damage.

Physicians seeing increase in brown recluse spider bites Posted: 23 Jul 2014 10:12 AM PDT Medical toxicologists are reporting an increase in patients seen with brown recluse spider bites this summer. There are two components to spider bites -- the cutaneous lesion and, more rarely, the systemic symptoms that can occur following the bite.

Researchers eliminate HIV from cultured human cells for first time Posted: 21 Jul 2014 12:19 PM PDT HIV-1, the most common type of the virus that causes AIDS, has proved to be tenacious, inserting its genome permanently into its victims' DNA, forcing patients to take a lifelong drug regimen to control the virus and prevent a fresh attack. Now, a team of researchers has designed a way to snip out the integrated HIV-1 genes for good.

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