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Tag: "scarcity" at biology news

How appetite-stimulating brain cells work overtime during fasting

...unger center to remain active when periods of food scarcity result in a "negative energy balance," said Sabrina Diano of Yale University School of Medicine, who led the study. Indeed, the researchers found, animals lacking either UCP2 or an enzyme that stimulates thyroid hormone's production ate less than ...

How trees manage water in arid environments

Water scarcity is slowly becoming a fact of life in increasingly large areas. The summer of 2006 was the second warmest in the continental United States since records began in 1895, according to the National Climatic Data Center. Moderate to extreme drought cond...

Living with water scarcity -- world must act now

...f the world’s population live in areas where water scarcity must be reckoned with. While much of this water scarcity cannot be avoided, water problems can be averted through better water management. For example: A ...

Using dental X-rays to detect osteoporosis

... not currently viable, largely due to the cost and scarcity of specialist equipment and staff. The team has therefore developed an innovative software-based approach to detecting osteoporosis using routine dental x-rays, by automatically analyzing specific characteristics of the radiographic trabecular bone...

New HIV statistics indicate increasing toll of AIDS on African American community

...communities by increasing affordable housing. ?The scarcity of affordable housing faced by many African-Americans is at the center of a web of interconnected socioeconomic problems affecting the black community, such as residential segregation, school failure for children and a lack of access to health care, ...

Humpback whales have brain cells also found in humans

...f parallel evolution. "In spite of the relative scarcity of information on many cetacean species, it is important to note in this context that sperm whales, killer whales, and certainly humpback whales, exhibit complex social patterns that included intricate communication skills, coalition-formation, coope...

Study suggests evolutionary link between diet, brain size in orangutans

...findings "suggest that temporary, unavoidable food scarcity may select for a decrease in brain size, perhaps a...that animals facing periods of uncontrollable food scarcity may deal with that by reducing their energy requirement for one of the most expensive organs in thei...

Modification of program enables prediction of gene transcription

...e," Brent said. The system takes advantage of the scarcity of the CG sequence, finding so-called CpG "islands" known to be more common near the transcription-start site. It also has a knack for recognizing sequences that indicate splice sites. Over the past two years, TWINSCAN has been finding and predicting...

York scientists warn of dramatic impact of climate change on Africa

...rn Africa and the south-west coast." Because of a scarcity of hard data, the team used a computer programme written by Dr Colin McClean, of York's Environment Department to study the response of plants to climate change. Dr Lovett added: "We needed a method that would help fill in gaps in knowledge. The tec...

Millennium Ecosystem Assessment: Many of 2 billion dryland dwellers at risk as land degrades

...rylands increase, especially in urban areas, water scarcity increases in tandem. Drylands contain 43% of the w...riple the number of people exposed to severe water scarcity at least once in every generation, leading to major food and health crises. ...

Malaria killing a million a year

...often not diagnosed with certainty, as well as the scarcity of reliable data from the communities where it occurs," WHO and UNICEF say. The Millennium Development Goals (MDGs), a set of targets agreed at a UN summit in 2000 to halve or eliminate many socio-economic ills, would halt or reverse the spread by 2...

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