Some states spend as little as $35 per person each year on home- and community-based services for seniors, while other states spend more than $1,300 per person annually, according to previous research.

Regardless of how much was spent on home- and community-based services, the researchers found that doubling states' spending on services would reduce the risk of nursing home admission among childless seniors by 35 percent. Seniors who do not have children to help care for them are less likely to have to go into a nursing home if they live in a state that spends more on home- and community- based services, researchers have found.

Thousands of men facing surgical removal of the prostate due to cancer may someday have one less thing to worry about: post-surgical urinary incontinence.

That's because a team of expert urologic surgeons at NewYork-Presbyterian Hospital/Weill Cornell Medical Center has devised a simple, effective means of reconstructing key anatomical structures that ensure continence.

What I find most exciting about basic molecular biology today is the prospect of building a quantitative understanding of how a cell works. Many other scientists are excited about this as well, leading to the current popularity of what's being called 'systems biology.' The idea is that maybe we can understand the design principles behind a cellular process - how the behavior of a cell emerges from all of those detailed physical interactions among proteins, nucleic acids and other components of the cell. If that sounds vague to you, well, that's because it is vague.

To download the 8 meter X 4 meter 900M resolution poster it is ony available through BitTorrent, the size is 3.89 GB and it can be downloaded here.

Smaller resolutions below.

The most detailed portraits ever of the Earth's land surface have been created with ESA's Envisat environmental satellite. The portraits are the first products produced as part of the ESA-initiated GlobCover project and are available online.

Bimonthly global composites for May to June 2005 and March to April 2006 can be accessed through a newly developed map server tool on ESA’s GlobCover website.

A research team, including Kent State Professor of Geology Dr. Joseph Ortiz, tracing the origin of the large carbon dioxide increase in Earth’s atmosphere at the end of the last ice age has detected two ancient "burps" that originated from the deepest parts of the southern ocean around Antarctica.

The new study showed carbon that had built up in the ocean over millennia was released in two big pulses at about 18,000 years ago and 13,000 years ago, says Dr. Thomas Marchitto of the University of Colorado at Boulder, who jointly led the study with colleague Dr. Scott Lehman.

Imagine being able to rapidly identify tiny biological molecules such as DNA and toxins using less than a drop of salt water in a system that can fit on a microchip.

In a paper appearing next week in the Proceedings of the National Academy of Sciences,* the team proves for the first time that a single nanometer-scale pore in a thin membrane can be used to accurately detect and sort different-sized polymer chains (a model for biomolecules) that pass through or block the channel.

Graphic showing a lipid bilayer membrane (blue) with an alpha-hemolysin nanopore.

Dr Pep Canadell, from the Global Carbon Project and CSIRO Marine and Atmospheric Research, says today in the journal Science that tropical deforestation releases 1.5 billion tonnes of carbon each year into the atmosphere.

"Deforestation in the tropics accounts for nearly 20 per cent of carbon emissions due to human activities," Dr Canadell says. "This will release an estimated 87 to 130 billion tonnes of carbon by 2100, which is greater than the amount of carbon that would be released by 13 years of global fossil fuel combustion. So maintaining forests as carbon sinks will make a significant contribution to stabilising atmospheric greenhouse gas concentrations."

Researchers at the University of Missouri-Columbia recently created a model of proline dehydrogenase, an important cancer-preventing enzyme in the human body, and analyzed how it works. A paper detailing their results was published today in the Journal of Biological Chemistry.

Parkinson's disease is well-known for its progression of motor disorders: stiffness, slowness, tremors, difficulties walking and talking. Less well known is that Parkinson's shares other symptoms with narcolepsy, a sleep disorder characterized by sudden and uncontrollable episodes of deep sleep, severe fatigue and general sleep disorder.

Investigators at St. Jude Children's Research Hospital have discovered inherited variations in certain genes that make children with acute lymphoblastic leukemia (ALL) susceptible to the toxic side effects caused by chemotherapy medications. The researchers showed that these variations, called polymorphisms, occur in specific genes known to influence pharmacodynamics (how drugs work in the body and how much drug is needed to have its intended effect).