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Neon Blue-tailed Tree Lizard Glides Like A Feather, Thanks To Light Bubbly Bones

Neon blue-tailed tree lizards are perfectly happy scurrying from branch to branch in their arboreal homes, but it wasn't clear whether they simply leaping between branches or glide. Researchers compared the tree lizards' jumps with common wall lizards' and gliding geckos' leaps, and found that the tree lizards glide because they are incredibly light. Their bones are packed with tiny air bubbles...

Improving Mouse Heart Function Following Heart Attack

One approach being developed as a way to improve heart function following heart attack is the injection of heart stem/progenitor cells directly into the heart. New research now indicates that transplanting sheets of clonally expanded heart cells expressing the protein Sca-1 (cells that are stem/progenitor cells) improves heart function after a heart attack in...

Taste Sensation: Ads Work Better If All Senses Are Involved

Corporations spend billions of dollars each year on food advertising. For example, Kraft Foods, PepsiCo, and McDonald's each spent more than $1 billion in advertising in 2007. A new study suggests those advertisers are missing out if their ads only mention taste and ignore our other...

Rock Climbing-related Injuries Increasing

The popularity of rock climbing has increased in the last ten years, and so have the number of injuries. A new study finds a 63 percent increase in the number of patients treated in emergency departments for rock climbing-related injuries.

Ancient Humans Left Evidence From The Party That Ended 4,000 Years Ago

The party was over more than 4,000 years ago, but the remnants still remain in the gourds and squashes that served as dishware. For the first time, researchers have studied the residues from gourds and squash artifacts that date back to 2200 B.C. and recovered starch grains from manioc, potato, chili pepper, arrowroot and algarrobo. The starches provide clues about the foods consumed at feasts,...

How Stressed Fat Tissue Malfunctions

Fat tissue dysfunction is caused by obesity-induced fat tissue stress: Cells over-grow as they store fat which may cause decreased oxygen delivery into the tissue; individual cells may die (at least in mouse models), and fat tissue inflammation ensues. The teams collected fat tissue samples from people undergoing abdominal surgery and identified a signaling pathway that is operational in...

Simple, Inexpensive Method To Detect Melamine Poison In Food

Researchers have responded to the World Health Organization's call for a simple, inexpensive method to detect melamine. Melamine is an industrial chemical that killed six Chinese children and hospitalized 150,000 last year after it was added to milk to increase its apparent protein...

Nature Or Nurture? New Epigenetic Model Blurs Line In The Debate

A new report complicates the debate over whether nature or nurture plays the most important role in complex diseases such as psychiatric disorders, heart disease and cancer. Scientists explain how epigenetics (temporary changes in gene function) and gene mutations (permanent, heritable changes) contribute to disease risk within populations, and lays the foundation for public health interventions...

Are We What Our Mothers Ate?

Mothers' health in the days and weeks prior to becoming pregnant may determine the health of offspring much later in life, according to new research. The studies demonstrate that maternal nutrition, protein intake and level of fat in the diet may cause epigenetic changes in the developing fetus that can have long-term health...

Twinkling Nanostars Cast New Light Into Biomedical Imaging

Researchers have created magnetically responsive gold nanostars that may offer a new approach to biomedical imaging. The nanostars gyrate when exposed to a rotating magnetic field, and can scatter light to produce a pulsating or "twinkling" effect. This twinkling allows them to stand out more clearly from noisy backgrounds like those found in biological...