- 'Programmable' antibiotic harnesses an enzyme to attack drug-resistant microbes
- NASA's SDO watches giant filament on the sun
- Neurobiological basis of human-pet relationship: Mothers' brains respond differently to images of their child and their dog
- Making oxygen before life: Oxygen can form directly from carbon dioxide in upper atmosphere
- Boosting biofuel: Yeast made to tolerate high levels of ethanol, making them more productive
- HIV pandemic's origins located: Likely to have emerged in Kinshasa around 1920
- Auditory system: The ruffling effect of rumble
- Energy drinks cause insomnia, nervousness in athletes
- Spiders: Survival of the fittest group
- Changing Antarctic waters could trigger steep rise in sea levels, conditions 14,000 years ago suggest
- Improving babies' language skills before they're even old enough to speak
Posted: 05 Oct 2014 10:49 AM PDT
Conventional antibiotics are indiscriminate about what they kill, a trait that can lead to complications for patients and can contribute to the growing problems of antibiotic resistance. But a a 'programmable' antibiotic would selectively target only the bad bugs, particularly those harboring antibiotic resistance genes, and leave beneficial microbes alone.
Posted: 03 Oct 2014 06:43 PM PDT
A snaking, extended filament of solar material currently lies on the front of the sun -- some 1 million miles across from end to end. Filaments are clouds of solar material suspended above the sun by powerful magnetic forces. Though notoriously unstable, filaments can last for days or even weeks.
Posted: 03 Oct 2014 06:43 PM PDT
How closely does the relationship between people and their non-human companions mirror the parent-child relationship? Researchers makes a contribution to answering this complex question by investigating differences in how important brain structures are activated when women view images of their children and of their own dogs.
Posted: 03 Oct 2014 06:22 AM PDT
About one fifth of the Earth's atmosphere is oxygen, pumped out by green plants as a result of photosynthesis and used by most living things on the planet to keep our metabolisms running. Scientists have now shown that oxygen can be formed directly from carbon dioxide in the upper atmosphere, changing models of how the atmosphere evolved early in Earth's history.
Posted: 02 Oct 2014 11:18 AM PDT
Yeast are commonly used to transform corn and other plant materials into biofuels such as ethanol. However, large concentrations of ethanol can be toxic to yeast, which has limited the production capacity of many yeast strains used in industry.
Posted: 02 Oct 2014 11:17 AM PDT
The present HIV pandemic almost certainly originated in Kinshasa, the capital of the Democratic Republic of the Congo, according to a new study. An international team of scientists reconstructed the genetic history of the HIV-1 group M pandemic, which saw HIV spread across Africa and around the world. Their analysis suggests that the common ancestor of group M is likely to have emerged in Kinshasa around 1920.
Posted: 02 Oct 2014 06:24 AM PDT
Barely perceptible low-frequency signals nevertheless activate measurable responses in our auditory circuits. Neurobiologists have now characterized the remarkable impact of low-frequency sounds on the inner ear.
Posted: 02 Oct 2014 05:43 AM PDT
A study analyzing the positive and negative effects of energy drinks on athletes has seen that, although in principle their sports performance was seen to improve by between 3% and 7%, there was also an increase in the frequency of insomnia, nervousness and the level of stimulation in the hours following competition, scientists report.
Posted: 01 Oct 2014 03:44 PM PDT
Researchers have uncovered the first-ever field-based evidence for a biological mechanism called 'group selection' contributing to local adaptation in natural populations. Evolutionary theorists have been debating the existence and power of group selection for decades. Now two scientists have observed it in the wild.
Posted: 01 Oct 2014 07:25 AM PDT
Current changes in the ocean around Antarctica are disturbingly close to conditions 14,000 years ago that new research shows may have led to the rapid melting of Antarctic ice and an abrupt 3-4 meter rise in global sea level.
Posted: 30 Sep 2014 02:14 PM PDT
In the first months of life, when babies begin to distinguish sounds that make up language from all the other sounds in the world, they can be trained to more effectively recognize which sounds "might" be language, accelerating the development of the brain maps which are critical to language acquisition and processing, according to new research.
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