Syndicate content Latest Science News -- ScienceDaily
Updated: 1 hour 36 min ago

New epigenetic mechanism revealed in brain cells

Wed, 01/07/2015 - 6:06pm
For decades, researchers in the genetics field have theorized that the protein spools around which DNA is wound, histones, remain constant in the brain, never changing after development in the womb. Researchers have now discovered that histones are steadily replaced in brain cells throughout life.
Categories: Science

Amazing light-manipulating abilities of squid

Wed, 01/07/2015 - 6:06pm
Perhaps not the brightest of cephalopods, the California market squid (Doryteuthis opalescens) has amazing light-manipulating abilities.
Categories: Science

Brain activity predicts promiscuity and problem drinking

Wed, 01/07/2015 - 5:33pm
A new pair of brain-imaging studies suggest that researchers may be able to predict how likely young adults are to develop problem drinking or risky sexual behavior in response to stress. The research is part of the ongoing Duke Neurogenetics Study or DNS, which began in 2010 to better understand how interactions between the brain, genome, and environment shape risky behaviors predicting mental illnesses including depression, anxiety, and addiction.
Categories: Science

Regenerative medicine biologists discover a cellular structure that explains fate of stem cells

Wed, 01/07/2015 - 5:33pm
Researchers have found a previously unidentified mechanism that helps explain why stem cells undergo self-renewing divisions but their offspring do not.
Categories: Science

Rosetta spacecraft sees sinkholes on comet

Wed, 01/07/2015 - 5:33pm
The European Space Agency's Rosetta spacecraft first began orbiting comet 67P/Churyumov-Gerasimenko in August 2014. Almost immediately, scientists began to wonder about several surprisingly deep, almost perfectly circular pits on the comet's surface. Now, a new study based on close-up imagery taken by Rosetta suggests that these pits are sinkholes, formed when ices beneath the comet's surface sublimate, or turn directly to gas.
Categories: Science

Human-like 'eye' in single-celled plankton: Mitochondria, plastids evolved together

Wed, 01/07/2015 - 5:33pm
Scientists have peered into the eye-like structure of single-celled marine plankton called warnowiids and found it contains many of the components of a complex eye.
Categories: Science

Humans evolved to be taller and faster-thinking, study suggests

Wed, 01/07/2015 - 5:33pm
People have evolved to be smarter and taller than their predecessors, a study of populations around the world suggests.
Categories: Science

Discovery of nanotubes offers new clues about cell-to-cell communication

Wed, 01/07/2015 - 5:19pm
When it comes to communicating with each other, some cells may be more "old school" than was previously thought. Certain types of stem cells use microscopic, threadlike nanotubes to communicate with neighboring cells, like a landline phone connection, rather than sending a broadcast signal.
Categories: Science

Groundwater modeling breakthrough

Wed, 01/07/2015 - 5:18pm
A newly discovered equation is expected to greatly improve the reliability and functionality for hundreds of important water models used by everyone from irrigators and city planners to climate scientists and botanists -- and trigger a new surge in data collection.
Categories: Science

New storage cell for solar energy storage, nighttime conversion

Wed, 01/07/2015 - 5:18pm
A materials science and engineering team has developed a new energy cell that can store large-scale solar energy even when it's dark.
Categories: Science

Helping students stick with online courses

Wed, 01/07/2015 - 4:36pm
Researchers showed that a dropout-prediction model trained on data from one offering of a course can help predict which students will stop out of the next offering.
Categories: Science

How brains make sense of the visual world

Wed, 01/07/2015 - 4:33pm
Researchers have uncovered key principles about the way vision-neurons work, explaining how the brain uses sensory information to guide the decisions that drive behaviors.
Categories: Science

Human brain may contain a map for social navigation

Wed, 01/07/2015 - 4:33pm
A study reveals how the hippocampus contributes to social behavior. The brain region that helps people tell whether an object is near or far may also guide how emotionally close they feel to others and how they rank them socially.
Categories: Science

Human brain study sheds light on how new memories are formed

Wed, 01/07/2015 - 4:33pm
In the first study of its kind researchers found that neurons in a specific brain region play a key role in rapidly forming memories about every day events, a finding that may result in a better understanding of memory loss and new methods to fight it in Alzheimer's and other neurological diseases.
Categories: Science

Electrical nerve stimulation can reverse spinal cord injury nerve damage in patients

Wed, 01/07/2015 - 3:53pm
Researchers find that nerve stimulation can improve the function of peripheral nerves damaged by spinal cord injury (SCI). This technique may be a new approach to preventing long-term changes in nerve and muscle function after SCI and improving SCI rehabilitation outcomes.
Categories: Science

Carbon capture and storage safety investigated

Wed, 01/07/2015 - 3:51pm
A significant step has been made for potential Carbon Capture and Storage (CCS) deployment, with the publication of the results from the world's first experiment into the realistic simulation of potential environmental impact of a submarine CO2 leakage.
Categories: Science

Observing the birth of a planet

Wed, 01/07/2015 - 3:48pm
Astronomers have confirmed the existence of a young giant gas planet still embedded in the midst of the disk of gas and dust surrounding its parent star. For the first time, scientists are able to directly study the formation of a planet at a very early stage.
Categories: Science

Boys more likely to have antipsychotics prescribed, regardless of age

Wed, 01/07/2015 - 3:48pm
Boys are more likely than girls to receive a prescription for antipsychotic medication regardless of age, researchers have found. Approximately 1.5 percent of boys ages 10-18 received an antipsychotic prescription in 2010, although the percentage falls by nearly half after age 19. Among antipsychotic users with mental disorder diagnoses, attention deficit hyperactivity disorder was the most common among youth ages 1-18, depression was the most common diagnosis among young adults ages 19-24 receiving antipsychotics.
Categories: Science

Indoor tanning rates drop among US adults

Wed, 01/07/2015 - 3:47pm
Indoor tanning rates dropped among adults from 5.5 percent in 2010 to 4.2 percent in 2013, although an estimated 7.8 million women and 1.9 million men still engage in the practice, which has been linked to increased cancer risk, according to the results of a new study.
Categories: Science

Sleep deprivation could reduce intrusive memories of traumatic scenes

Wed, 01/07/2015 - 2:48pm
A good night's sleep has long been recommended to those who have experienced a traumatic event. But a new study provides preliminary experimental work suggesting it could actually be the wrong thing to do.
Categories: Science