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Science News Archive May 2005 - Page 11


Page 11 of 16

Scientists map the world for nature conservation

A new world map of plant biodiversity has been published, providing a common geographical standard for global nature conservation strategies. The atlas reveals the most species-rich areas on earth, with Borneo's lowland rainforest standing out as the most diverse, containing around 10,000 plant species.

SourceBlackwell Publishing Ltd.·JournalJournal of Biogeography·DateMay 12, 2005

Why embryos need a good diet

Research suggests that embryonic nutrition can impact health outcomes, with adaptations set in place during fetal development potentially leading to benefits later in life. For example, meadow voles have coats thickened or thinned based on day length exposure in early pregnancy, with no immediate survival value but later benefits.

SourceBlackwell Publishing Ltd.·JournalThe Journal of Physiology·DateMay 12, 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.

Fat's fate depends on its source

A new study published in Cell Metabolism found that normal metabolism requires so-called "new" fat to maintain glucose, lipid, and cholesterol homeostasis. The researchers discovered that old fat stores alone failed to set critical metabolic pathways in motion, leading to a marked decline in gene activity.

SourceCell Press·JournalCell Metabolism·DateMay 10, 2005