Air quality has improved in most European countries over the last few decades. Yet, even at current levels, air pollution may aggravate respiratory diseases, shorten life expectancy by up to several months, and possibly increase infant mortality in highly polluted areas.
In October 2005 the World Health Organization (WHO) will reconsider current air quality guidelines. Does the latest research warrant new standards to better protect our health? To answer this key question, WHO experts closely examined three air pollutants that are known to be harmful: particulate matter, nitrogen dioxide, and ozone.
GreenFacts now provides non specialists with easy access to these recent scientific findings at www.greenfacts.org/air-pollution/, in a reader-friendly structure.
Manuel Carmona Yebra | alfa
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DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.
Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...
MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
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Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
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