ScienceDaily: Top Science News

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• Bioengineers introduce 'Bi-Fi' -- The biological 'Internet'
• Predatory bacterial crowdsourcing: Scientists ID simple formula that allows bacteria to engulf food in waves
• Saturn’s moon Titan shows surprising seasonal changes
• Loop the loop, DNA style: One- or two-way transcription depends on gene loops

Bioengineers introduce 'Bi-Fi' -- The biological 'Internet' Posted: 28 Sep 2012 07:38 AM PDT Bioengineers have created a biological mechanism to send genetic messages from cell to cell -- something they've nicknamed the biological Internet, or "Bi-Fi."

Predatory bacterial crowdsourcing: Scientists ID simple formula that allows bacteria to engulf food in waves Posted: 28 Sep 2012 06:37 AM PDT Scientists have discovered the mechanism that allows one of the world's smallest predators -- the soil bacteria Myxococcus xanthus -- to form collective waves that spread and engulf bacterial prey. The study finds that the same mechanism helps M. xanthus spread quickly and stay atop prey until it is devoured.

Saturn’s moon Titan shows surprising seasonal changes Posted: 28 Sep 2012 05:52 AM PDT Detailed observations of Saturn's moon Titan have now spanned 30 years, covering an entire solar orbit for this distant world. Researchers have now analyzed data gathered over this time and has found that the changing seasons of Titan affect it more than previously thought.

Loop the loop, DNA style: One- or two-way transcription depends on gene loops Posted: 28 Sep 2012 05:52 AM PDT Scientists have discovered that, by forming or undoing gene loops, cells manipulate the path of the transcription machinery – which reads out instructions from DNA – controlling whether it moves along the genetic material in one direction or two.

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