- Ultrafast electron diffraction experiments open a new window on the microscopic world
- How culture influences violence among the Amazon's ‘fierce people'
- Physicists closer to understanding balance of matter, antimatter in universe
- Emergent behavior lets bubbles 'sense' environment
- How cells know which way to go
- Activity in dendrites critical in memory formation
- New evidence for an exotic, predicted superconducting state
- Breakthrough in molecular electronics paves way for new generation of DNA-based computer circuits
- Astronomers image the exploding fireball stage of a nova
Posted: 27 Oct 2014 03:22 PM PDT
Posted: 27 Oct 2014 03:19 PM PDT
When Yanomamö men in the Amazon raided villages and killed decades ago, they formed alliances with men in other villages rather than just with close kin like chimpanzees do. And the spoils of war came from marrying their allies' sisters and daughters, rather than taking their victims' land and women.
Posted: 27 Oct 2014 11:50 AM PDT
Posted: 27 Oct 2014 07:05 AM PDT
Tiny, soapy bubbles can reorganize their membranes to let material flow in and out in response to the surrounding environment, according to researchers. This behavior could be exploited in creating microbubbles that deliver drugs or other payloads inside the body -- and could help us understand how the very first living cells on Earth might have survived billions of years ago.
Posted: 27 Oct 2014 05:50 AM PDT
Amoebas aren't the only cells that crawl: Movement is crucial to development, wound healing and immune response in animals, not to mention cancer metastasis. In two new studies, researchers answer long-standing questions about how complex cells sense the chemical trails that show them where to go — and the role of cells' internal "skeleton" in responding to those cues.
Posted: 26 Oct 2014 04:53 PM PDT
Researchers have discovered how neurons in the brain might allow some experiences to be remembered while others are forgotten. Using a unique microscope, they peered into the brain of a living animal navigating a virtual reality maze. Images of individual neurons called place cells showed that, surprisingly, the activity of the cell body and its dendrites can be different. A lasting memory of an experience was not formed by neurons when cell bodies were activated but dendrites were not.
Posted: 26 Oct 2014 04:53 PM PDT
Posted: 26 Oct 2014 04:52 PM PDT
Scientists have announced a significant breakthrough toward developing DNA-based electrical circuits. Molecular electronics, which uses molecules as building blocks for the fabrication of electronic components, has been seen as the ultimate solution to the miniaturization challenge. However, to date, no one has actually been able to make complex electrical circuits using molecules. Now scientists report reproducible and quantitative measurements of electricity flow through long molecules made of four DNA strands, signaling a significant breakthrough towards the development of DNA-based electrical circuits.
Posted: 26 Oct 2014 04:50 PM PDT
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