Science News SciGuru.com |  |
- In Static Friction, Chemistry is Key to Strong Bonds
- Clever cockatoo with skilled craftmanship
- A new computational method for timing the tree of life
- Pressure switch inside the head
- How bacteria talk to each other and our cells
| In Static Friction, Chemistry is Key to Strong Bonds Posted: 06 Nov 2012 12:07 PM PST Inspired by phenomena common to both earthquakes and atomic force microscopy, University of Wisconsin-Madison materials engineers have learned that chemical reactions between two silicon dioxide surfaces cause the bonds at that interface to "age," or strengthen gradually over time. |
| Clever cockatoo with skilled craftmanship Posted: 06 Nov 2012 09:08 AM PST The use and fashioning of objects as tools has rarely been seen in the animal kingdom. Alice Auersperg and Birgit Szabo, both cognitive biologists at the University of Vienna, have for the first time observed this skill in a Goffin's Cockatoo: It makes and uses wooden tools to retrieve toys and food. The results, presently published in the journal "Current Biology", are filling a part of the puzzle in the development of intelligent behaviour. |
| A new computational method for timing the tree of life Posted: 06 Nov 2012 09:01 AM PST With its deeply embedded roots, sturdy trunk and dense profusion of branches, the Tree of Life is a structure of nearly unfathomable complexity and beauty. While major strides have been made to establish the evolutionary hierarchy encompassing every living species, the project is still in its infancy. |
| Pressure switch inside the head Posted: 06 Nov 2012 08:57 AM PST  An increase in cerebral pressure may cause dementia and could destroy the brain. Companies have been seeking to find monitoring sensors that can be implanted into the brain, and read from outside the body. A tiny sensor may provide the help needed. |
| How bacteria talk to each other and our cells Posted: 06 Nov 2012 08:49 AM PST Bacteria can talk to each other via molecules they themselves produce. The phenomenon is called quorum sensing, and is important when an infection propagates. Now, researchers at Linköping University in Sweden are showing how bacteria control processes in human cells the same way. |
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