Science news

Every breath you take contains a molecule of history

25-06-2017 13:00

In 'Caesar’s Last Breath', best-selling author Sam Kean tells vivid stories about the gases we can’t see.

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The friendly honk

25-06-2017 06:00

(Acoustical Society of America) Sound permeates the human experience and gets our attention, sometimes traumatically so. Consider the car horn. It is a widespread practical application of this noise-trauma-alert principle -- and an increasing source of noise pollution worldwide as the global traffic population grows. It also is the subject of new noise pollution research to be presented during Acoustics '17 Boston. The study introduces a new pedestrian-friendly car-horn sound identified through

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Seeing with your ears

25-06-2017 06:00

(Acoustical Society of America) Paris' Cathedral of Notre Dame has a ghost orchestra that is always performing, thanks to a sophisticated, multidisciplinary acoustics research project that will be presented during Acoustics '17 Boston. In the project, computer models use recordings from a live concert held at the cathedral and detailed room acoustic simulations to produce a novel type of audience experience: a virtual recreation of the live performance using spatial audio and virtual reality.

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Scratch test -- wound healing disrupted by smoke but not by Vype e-cigarette vapor

25-06-2017 06:00

(R&D at British American Tobacco) A new laboratory study reveals that cigarette smoke completely prevented wound healing at concentrations over 20 percent in a wound healing assay, whereas e-cigarette vapor had no effect, even at 100 percent concentration and double the amount of nicotine relative to smoke.The 'wound' was created in a cultured layer of of vascular endothelial cells. These are the cells that line the inside of blood vessels.

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