ScienceDaily: Top Science News

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• When hungry, Gulf of Mexico algae go toxic
• Using fat to fight brain cancer: Stem cells from human adipose tissue used to chase migrating cancer cells
• Earth-sized planets in habitable zones are more common than previously thought
• Canadian Arctic glacier melt accelerating, irreversible, projections suggest
• Four dinosaur egg species identified in Lleida, Spain
• Nose's unheralded neighbor: Maxillary sinuses allow noses to change shapes
• Some bacteria may protect against disease caused by stomach infection
• Ultra-high-speed optical communications link sets new power efficiency record
• NASA Rover Finds Conditions Once Suited for Ancient Life on Mars
• Antarctic and Arctic insects use different genetic mechanisms to cope with lack of water
• Cryptic clams: Biologists find species hiding in plain view
• Scientists identify why some fathers are left holding the baby
• Spiders, not birds, may drive evolution of some butterflies
• Earliest tobacco use in Pacific Northwest discovered
• Babies prefer individuals who are nice to those like them and mean to those who aren't
• Fluorescent light revealed as gauge of coral health: Mysterious glow of light found to correlate with coral stress prior to bleaching
• Single concussion may cause lasting brain damage
• Astronomers discover extremely rare triple quasar
• Havoc in biology’s most-used human cell line: Striking differences between HeLa genome and that of normal human cells
• Online records could expose intimate details and personality traits of millions

When hungry, Gulf of Mexico algae go toxic Posted: 12 Mar 2013 02:16 PM PDT When Gulf of Mexico algae don't get enough nutrients, they focus their remaining energy on becoming more and more poisonous to ensure their survival, according to a new study.

Using fat to fight brain cancer: Stem cells from human adipose tissue used to chase migrating cancer cells Posted: 12 Mar 2013 02:16 PM PDT In laboratory studies, researchers say they have found that stem cells from a patient's own fat may have the potential to deliver new treatments directly into the brain after the surgical removal of a glioblastoma, the most common and aggressive form of brain tumor.

Earth-sized planets in habitable zones are more common than previously thought Posted: 12 Mar 2013 12:20 PM PDT The number of potentially habitable planets is greater than previously thought, according to a new analysis by a Penn State researcher, and some of those planets are likely lurking around nearby stars.

Canadian Arctic glacier melt accelerating, irreversible, projections suggest Posted: 12 Mar 2013 10:49 AM PDT Ongoing glacier loss in the Canadian high Arctic is accelerating and probably irreversible, new model projections suggest. The Canadian high Arctic is home to the largest clustering of glacier ice outside of Greenland and Antarctica -- 146,000 square kilometers (about 60,000 square miles) of glacier ice spread across 36,000 islands.

Four dinosaur egg species identified in Lleida, Spain Posted: 12 Mar 2013 10:49 AM PDT Scientists have for the first time documented detailed records of dinosaur egg fossils in the Coll de Nargó archaeological site in Lleida, Spain. Up until now, only one type of dinosaur egg had been documented in the region.

Nose's unheralded neighbor: Maxillary sinuses allow noses to change shapes Posted: 12 Mar 2013 10:47 AM PDT The maxillary sinuses, those pouches on either side of the human nose, have a purpose after all: They act as cushions to allow noses to assume different shapes. A new study explains the relationship for the first time.

Some bacteria may protect against disease caused by stomach infection Posted: 12 Mar 2013 10:47 AM PDT Half of the world's human population is infected with the stomach bacteria called Helicobacter pylori, yet it causes disease in only about 10 percent of those infected. Other bacteria living in the stomach may be a key factor in whether or not H. pylori causes disease, according to a new study.

Ultra-high-speed optical communications link sets new power efficiency record Posted: 12 Mar 2013 10:46 AM PDT Ultrafast supercomputers that operate at speeds 100 times faster than current systems are now one step closer to reality. Researchers have found a way to transmit massive amounts of data with unprecedentedly low power consumption.

NASA Rover Finds Conditions Once Suited for Ancient Life on Mars Posted: 12 Mar 2013 10:17 AM PDT An analysis of a rock sample collected by NASA's Curiosity rover shows ancient Mars could have supported living microbes. Scientists identified sulfur, nitrogen, hydrogen, oxygen, phosphorus and carbon -- some of the key chemical ingredients for life -- in the powder Curiosity drilled out of a sedimentary rock near an ancient stream bed in Gale Crater on the Red Planet last month.

Antarctic and Arctic insects use different genetic mechanisms to cope with lack of water Posted: 12 Mar 2013 09:18 AM PDT Although they live in similarly extreme ecosystems at opposite ends of the world, Antarctic insects appear to employ entirely different methods at the genetic level to cope with extremely dry conditions than their counterparts that live north of the Arctic Circle, according to a new study.

Cryptic clams: Biologists find species hiding in plain view Posted: 12 Mar 2013 09:18 AM PDT Cryptic comments seem to have an ambiguous, obscure or hidden meaning. In biology, cryptic species are outwardly indistinguishable groups whose differences are hidden inside their genes.

Scientists identify why some fathers are left holding the baby Posted: 12 Mar 2013 09:18 AM PDT A century old mystery as to why, for some animals, it's the father rather than the mother that takes care of their young has been cracked by scientists.

Spiders, not birds, may drive evolution of some butterflies Posted: 12 Mar 2013 07:25 AM PDT Butterflies are among the most vibrant insects, with colorations sometimes designed to deflect predators. New research shows some of these defenses may be driven by enemies one-tenth their size.

Earliest tobacco use in Pacific Northwest discovered Posted: 12 Mar 2013 07:10 AM PDT Native American hunter-gatherers living more than a thousand years ago in what is now northwestern California ate salmon, acorns and other foods, and now we know they also smoked tobacco -- the earliest known usage in the Pacific Northwest, according to a new study.

Babies prefer individuals who are nice to those like them and mean to those who aren't Posted: 12 Mar 2013 06:29 AM PDT Infants as young as nine months old prefer individuals who are nice to people like them and mean to people who aren't like them, according to a new study.

Fluorescent light revealed as gauge of coral health: Mysterious glow of light found to correlate with coral stress prior to bleaching Posted: 12 Mar 2013 06:29 AM PDT Coral reef decline in recent years due to a variety of threats -- from pollution to climate warming -- has lent urgency to the search for new ways to evaluate their health. A new study has revealed that fluorescence, the dazzling but poorly understood light produced by corals, can be an effective tool for gauging their health.

Single concussion may cause lasting brain damage Posted: 12 Mar 2013 06:26 AM PDT A single concussion may cause lasting structural damage to the brain, according to a new study.

Astronomers discover extremely rare triple quasar Posted: 12 Mar 2013 06:25 AM PDT For only the second time in history, astronomers have discovered an extremely rare triple quasar system. Quasars are extremely bright and powerful sources of energy that sit in the center of a galaxy, surrounding a black hole. In systems with multiple quasars, the bodies are held together by gravity and are believed to be the product of galaxies colliding.

Havoc in biology’s most-used human cell line: Striking differences between HeLa genome and that of normal human cells Posted: 12 Mar 2013 06:24 AM PDT HeLa cells are the world's most commonly used human cell lines, and have served as a standard for understanding many fundamental biological processes. In a new study, scientists announce they have successfully sequenced the genome of a HeLa cell line. It provides a high-resolution genomic reference that reveals the striking differences between the HeLa genome and that of normal human cells. The study could improve the way HeLa cells are used to model human biology.

Online records could expose intimate details and personality traits of millions Posted: 11 Mar 2013 12:11 PM PDT Research shows that intimate personal attributes can be predicted with high levels of accuracy from "traces" left by seemingly innocuous digital behavior, in this case Facebook Likes -- raising important questions about personalized marketing and online privacy.

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