Uncategorized
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Bacteria give carpet a nasty smell
A compound produced by bacteria may be responsible for the "cat urine" smell of some new carpeting.
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Pen-shaped device purifies water
A battery-powered instrument the size and shape of a pen can quickly disinfect contaminated drinking water.
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Molecule sparks origin-of-life debate
The first genetic material may have been a molecule called peptide nucleic acid, or PNA.
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RNA and DNA help cells switch class
Immune cells may tailor their genetic blueprint for antibodies through unusual RNA-DNA structures.
- Astronomy
More evidence of a flat universe
Another balloon-borne experiment recording relic radiation from the Big Bang has found evidence that the universe is flat.
- Astronomy
A supernova’s shocking development
Astronomers have for the first time recorded the full force of the shock wave hurled from supernova 1987A, the brightest stellar explosion witnessed from Earth since the invention of the modern telescope.
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19191
I was shocked to read that now we need to be concerned not only with genetically modified organisms that we can see, but code-transgressing organisms that are invisible. Altering Escherichia coli in this way seems very dangerous. E. coli is found in every human intestine and has a proven ability to swap genetic material with […]
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Code Breakers
Scientists are altering bacteria in a most fundamental way.
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19157
This report reminded me of similar studies demonstrating longer life in people who own pets. Has anyone compared these studies and looked for causes of the increased life span in common in these two populations? Such things as increased opportunities of emotional expression, getting out of the house on a regular basis, or adapting to […]
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Religious commitment linked to longer life
A statistical analysis of 42 studies revealed that people who report heavy involvement in religious activities tend to have better physical health and live longer than those who don't.
- Physics
Spectrum deftly takes visible light’s pulse
A rainbow path to more precise measurements of visible-light frequencies may become an express lane to unprecedented accuracy in everyday measurements for all the sciences.
