ScienceDaily: Top Environment News |
- Physics of going viral: Rate of DNA transfer from viruses to bacteria measured
- Scientists measure soot particles in flight
- Ancient human ancestors had unique diet
- Dying trees in Southwest set stage for erosion, water loss in Colorado River
- Happy accident answers cell signal controversy
- Most new pesticides have roots in natural substances
- Role of urban greenery in CO<sub>2</sub> exchange demonstrated
- Evidence of oceanic 'green rust' offers hope for the future
- Half of inhaled soot particles from diesel exhaust, fires gets stuck in the lungs
- New mechanism of bacterial pathogenesis discovered
- Marine energy doubled by predicting wave power
| Physics of going viral: Rate of DNA transfer from viruses to bacteria measured Posted: 27 Jun 2012 11:25 AM PDT Researchers have been able, for the first time, to watch viruses infecting individual bacteria by transferring their DNA, and to measure the rate at which that transfer occurs. Shedding light on the early stages of infection by this type of virus -- a bacteriophage -- the scientists have determined that it is the cells targeted for infection, rather than the amount of genetic material within the viruses themselves, that dictate how quickly the bacteriophage's DNA is transferred. |
| Scientists measure soot particles in flight Posted: 27 Jun 2012 10:20 AM PDT For the first time, air-polluting soot particles have been imaged in flight down to nanometer resolution. Pioneering a new technique scientists snapped the most detailed images yet of airborne aerosols. |
| Ancient human ancestors had unique diet Posted: 27 Jun 2012 10:20 AM PDT When it came to eating, an upright, 2-million-year-old African hominid had a diet unlike virtually all other known human ancestors, says a new study. |
| Dying trees in Southwest set stage for erosion, water loss in Colorado River Posted: 27 Jun 2012 09:22 AM PDT New research concludes that a one-two punch of drought and mountain pine beetle attacks are the primary forces that have killed more than 2.5 million acres of pinyon pine and juniper trees in the American Southwest during the past 15 years, setting the stage for further ecological disruption -- including more water loss in the Colorado River basin. |
| Happy accident answers cell signal controversy Posted: 27 Jun 2012 09:20 AM PDT Using a new tool allowing proteins in a living cell to be manipulated in real time, researchers have stumbled across the answer to a longstanding debate about where and how a certain protein is turned on in the cell. Scientists show that protein kinase A is also activated in the nucleus rather than inside the cell's body, a challenge to traditional beliefs. |
| Most new pesticides have roots in natural substances Posted: 27 Jun 2012 07:33 AM PDT Scientists who search for new pesticides for use in humanity's battle of the bugs and other threats to the food supply have been learning lessons from Mother Nature, according to a new analysis. It concludes that more than two out of every three new pesticide active ingredients approved in recent years had roots in natural substances produced in plants or animals. |
| Role of urban greenery in CO<sub>2</sub> exchange demonstrated Posted: 27 Jun 2012 06:28 AM PDT In what might be the first study to report continuous measurements of net CO2 exchange of urban vegetation and soils over a full year or more, scientists conclude that not only is vegetation important in the uptake of the greenhouse gas, but also that different types of vegetation play different roles. |
| Evidence of oceanic 'green rust' offers hope for the future Posted: 27 Jun 2012 06:22 AM PDT "Green rust" played a key role in making the Earth habitable and may now have an equally important role to play in cleaning it up for the future. Green rust is a highly reactive iron mineral which experts hope could be used to clean up metal pollution and even radioactive waste. |
| Half of inhaled soot particles from diesel exhaust, fires gets stuck in the lungs Posted: 27 Jun 2012 06:20 AM PDT The exhaust from diesel-fueled vehicles, wood fires and coal-driven power stations contains small particles of soot that flow out into the atmosphere. The soot is a scourge for the climate but also for human health. Now for the first time, researchers have studied in detail how diesel soot gets stuck in the lungs. The results show that more than half of all inhaled soot particles remain in the body. |
| New mechanism of bacterial pathogenesis discovered Posted: 27 Jun 2012 06:17 AM PDT Scientists have identified a new mechanism of bacterial pathogenesis. Bacteria that cause chronic infections have an amazing but yet poorly known ability to subvert immune response, live and produce offspring, enter and wake up from a dormant phase to cause, in some instances, deadly complications. |
| Marine energy doubled by predicting wave power Posted: 26 Jun 2012 02:27 PM PDT The energy generated from our oceans could be doubled using new methods for predicting wave power. New research could pave the way for significant advancements in marine renewable energy, making it a more viable source of power. The researchers devised a means of accurately predicting the power of the next wave in order to make the technology far more efficient, extracting twice as much energy as is currently possible. |
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