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Science News for May 11, 2005


Simple but seminal: Building a robot that can reproduce

Cornell University researchers have developed a robot composed of modular cubes, called molecubes, that can self-replicate by bending and attaching to other cubes. This technology has potential applications for space exploration and hazardous work environments, where robots could repair or rebuild themselves with spare modules.

SourceCornell University·JournalNature·DateMay 11, 2005

How exactly does the brain control breathing?

Researcher Patrice G. Guyenet proposes that central chemoreceptors are located in the retrofacial region of the brainstem, loaded with glutamate, to sense pH changes in cerebrospinal fluid. In contrast, Dr. Richerson suggests that these receptors are found near midline blood vessels to 'taste' blood pH levels.

SourceBlackwell Publishing Ltd.·JournalExperimental Physiology·DateMay 11, 2005

Scientists discover odd-ball rodent

A new rodent species, Kha-Nyou, has been discovered in Central Laos with distinct characteristics. The species is estimated to have diverged from other rodents millions of years ago and is found to be a nocturnal vegetarian, giving birth to one offspring at a time.

SourceWildlife Conservation Society·JournalSystematics and Biodiversity·DateMay 11, 2005

Whimpers from the Sun?

A new study reveals that Coronal Mass Ejections (CMEs) can originate from tiny magnetic regions on the Sun, challenging current theories. The research used data from NASA/ESA's SOHO spacecraft and found that these mini-CMEs were energetic enough to reach Earth, causing aurora and disrupting satellite communications.