ScienceDaily: Top Science News |
- Bottling up sound waves: Acoustic bottle beams hold promise for imaging, cloaking, levitation and more
- Flores bones show features of Down syndrome, not a new 'Hobbit' human
- The evolution of migration: Ancestral songbirds headed south for the winter
- Mathematical equation to predict happiness: Doesn't depend on how well things go, but on whether things are better than expected
- Massive volcanic outbursts on Jupiter's moon Io: More common than thought?
- Newly discovered juvenile whale shark aggregation in Red Sea
- No-power Wi-Fi connectivity could fuel Internet of Things reality
- How amphibians crossed continents: DNA helps piece together 300-million-year journey
- Extracting audio from visual information: Algorithm recovers speech from vibrations of a potato-chip bag filmed through soundproof glass
- Video-game playing for less than an hour a day is linked with better-adjusted children, study finds
- Implanted neurons become part of the brain, mouse study shows
- New material allows for ultra-thin solar cells
- Kangaroos win when aborigines hunt with fire: Co-evolution benefits Australia's martu people and wildlife
- Making sense of scents: Mice can identify specific odors amid complex olfactory environments
- Atlantic warming turbocharges Pacific trade winds
| Posted: 04 Aug 2014 12:15 PM PDT Researchers have developed a technique for generating acoustic bottles in open air that can bend the paths of sound waves along prescribed convex trajectories. These self-bending bottle beams hold promise for ultrasonic imaging and therapy, and acoustic cloaking, levitation and particle manipulation. |
| Flores bones show features of Down syndrome, not a new 'Hobbit' human Posted: 04 Aug 2014 12:15 PM PDT In October 2004, excavation of fragmentary skeletal remains from the island of Flores in Indonesia yielded what was called 'the most important find in human evolution for 100 years.' Its discoverers dubbed the find Homo floresiensis, a name suggesting a previously unknown species of human. |
| The evolution of migration: Ancestral songbirds headed south for the winter Posted: 04 Aug 2014 12:14 PM PDT To scientists, long distance migration still holds many mysteries, one of which is: Where did migration begin and how did it evolve? This question has long been a debated topic among scientists, but thanks to new research, we may have an answer for one of the largest groups of migratory birds. |
| Posted: 04 Aug 2014 12:14 PM PDT The happiness of over 18,000 people worldwide has been predicted by a mathematical equation, with results showing that moment-to-moment happiness reflects not just how well things are going, but whether things are going better than expected. |
| Massive volcanic outbursts on Jupiter's moon Io: More common than thought? Posted: 04 Aug 2014 11:10 AM PDT Three massive volcanic eruptions occurred on Jupiter's moon Io within a two-week period in August of last year. This led astronomers to speculate that such "outbursts," which can send material hundreds of miles above the surface, might be much more common than they thought. |
| Newly discovered juvenile whale shark aggregation in Red Sea Posted: 04 Aug 2014 10:43 AM PDT Whale sharks (Rhincodon typus) -- which grow more than 30 feet long -- are the largest fish in the world's ocean, but little is known about their movements on a daily basis or over years. A newly discovered juvenile whale shark aggregation off Saudi Arabia is giving researchers a rare glimpse into the lives of these gentle giants. |
| No-power Wi-Fi connectivity could fuel Internet of Things reality Posted: 04 Aug 2014 10:42 AM PDT Engineers have designed a new communication system that uses radio frequency signals as a power source and reuses existing Wi-Fi infrastructure to provide Internet connectivity to battery-free devices. |
| How amphibians crossed continents: DNA helps piece together 300-million-year journey Posted: 04 Aug 2014 09:32 AM PDT A professor has succeeded in constructing a first-of-its-kind comprehensive diagram of the geographic distribution of amphibians, showing the movement of 3,309 species between 12 global ecoregions. Armed with DNA sequence data, he sought to accurately piece together the 300-million-year storyline of their journey. |
| Posted: 04 Aug 2014 07:05 AM PDT Researchers at MIT, Microsoft, and Adobe have developed an algorithm that can reconstruct an audio signal by analyzing minute vibrations of objects depicted in video. In one set of experiments, they were able to recover intelligible speech from the vibrations of a potato-chip bag photographed from 15 feet away through soundproof glass. |
| Video-game playing for less than an hour a day is linked with better-adjusted children, study finds Posted: 04 Aug 2014 07:03 AM PDT A new study suggests video game-playing for less than an hour a day is linked with better-adjusted children and teenagers. The research found that young people who indulged in a little video game-playing were associated with being better adjusted than those who had never played or those who were on video games for three hours or more. |
| Implanted neurons become part of the brain, mouse study shows Posted: 04 Aug 2014 07:01 AM PDT Scientists have grafted neurons reprogrammed from skin cells into the brains of mice for the first time with long-term stability. Six months after implantation, the neurons had become fully functionally integrated into the brain. This successful, lastingly stable, implantation of neurons raises hope for future therapies that will replace sick neurons with healthy ones in the brains of Parkinson's disease patients, for example. |
| New material allows for ultra-thin solar cells Posted: 04 Aug 2014 03:59 AM PDT Extremely thin, semi-transparent, flexible solar cells could soon become reality. Scientists have managed to create a semiconductor structure consisting of two ultra-thin layers, which appears to be excellently suited for photovoltaic energy conversion. Several months ago, the team had already produced an ultra-thin layer of the photoactive crystal tungsten diselenide. Now, this semiconductor has successfully been combined with another layer made of molybdenum disulphide, creating a designer-material that may be used in future low-cost solar cells. |
| Posted: 04 Aug 2014 03:57 AM PDT Australia's Martu people hunt kangaroos and set small fires to catch lizards, as they have for at least 2,000 years. A researcher found such human-made disruption boosts kangaroo populations – showing how co-evolution helped marsupials and made Aborigines into unintentional conservationists. |
| Making sense of scents: Mice can identify specific odors amid complex olfactory environments Posted: 03 Aug 2014 04:37 PM PDT Exactly how animals separate the smells of objects of interest, such as food sources or the scent of predators, from background information has remained largely unknown. Even the extent to which animals can make such distinctions, and how differences between scents might affect the process were largely a mystery -- until now. A new study shows that while mice can be trained to detect specific odorants embedded in random mixtures, their performance drops steadily with increasing background components. |
| Atlantic warming turbocharges Pacific trade winds Posted: 03 Aug 2014 04:36 PM PDT Rapid warming of the Atlantic Ocean, likely caused by global warming, has turbocharged Pacific Equatorial trade winds. This has caused eastern tropical Pacific cooling, amplified the Californian drought, accelerated sea level rise three times faster than the global average in the Western Pacific and has slowed the rise of global average surface temperatures since 2001. |
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