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Wednesday, November 14, 2012

ScienceDaily: Top Science News

ScienceDaily: Top Science News


High exposure to food-borne toxins: Preschool children particularly vulnerable to compounds linked to cancer, other conditions

Posted: 13 Nov 2012 10:49 AM PST

In a sobering study, researchers measured food-borne toxin exposure in children and adults by pinpointing foods with high levels of toxic compounds and determining how much of these foods were consumed.

Warming temperatures will change Greenland's face, experts predict

Posted: 13 Nov 2012 10:48 AM PST

Global climate models abound. What is harder to pin down, is how a warmer global temperature might affect any specific region on Earth. Researchers have now made the global local. Using a combination of climate models, they predict how different greenhouse gas scenarios would change the face of Greenland and impact sea level rise.

Injectable sponge delivers drugs, cells, and structure

Posted: 13 Nov 2012 10:43 AM PST

Bioengineers have developed a gel-based sponge that can be molded to any shape, loaded with drugs or stem cells, compressed to a fraction of its size, and delivered via injection. Once inside the body, it pops back to its original shape and gradually releases its cargo, before safely degrading.

Even low-level radioactivity is damaging, scientists conclude

Posted: 13 Nov 2012 10:42 AM PST

Even the very lowest levels of radiation are harmful to life, scientists have concluded, reporting the results of a wide-ranging analysis of 46 peer-reviewed studies published over the past 40 years. Variation in low-level, natural background radiation was found to have small, but highly statistically significant, negative effects on DNA as well as several measures of health.

Computer memory could increase fivefold from advances in self-assembling polymers

Posted: 13 Nov 2012 09:22 AM PST

The researchers' technique, which relies on a process known as directed-self assembly, is being given a real-world test run in collaboration with one of the world's leading innovators in disk drives.

Human eye gives researchers visionary design for new, more natural lens technology

Posted: 13 Nov 2012 09:20 AM PST

Drawing heavily upon nature for inspiration, researchers have created a new artificial lens that is nearly identical to the natural lens of the human eye. This innovative lens, which is made up of thousands of nanoscale polymer layers, may one day provide a more natural performance in implantable lenses to replace damaged or diseased human eye lenses, as well as consumer vision products; it also may lead to superior ground and aerial surveillance technology.

Supersymmetry squeezed as Large Hadron Collider spots ultra rare particle decay

Posted: 13 Nov 2012 06:50 AM PST

Scientists at the Large Hadron Collider (LHC) at CERN, near Geneva, have spotted one of the rarest particle decays ever seen in nature. The result is very damaging to new theories like the extremely popular Supersymmetry.

Solving the mystery of aging: Longevity gene makes Hydra immortal and humans grow older

Posted: 13 Nov 2012 06:19 AM PST

Why do we get older? When do we die and why? Is there a life without aging? For centuries, science has been fascinated by these questions. Now researchers have examined why the polyp Hydra is immortal -- and unexpectedly discovered a link to aging in humans.

Hormone combination effective and safe for treating obesity in mice

Posted: 13 Nov 2012 06:19 AM PST

Scientists have found a way to link two hormones into a single molecule, producing a more effective therapy with fewer side effects for potential use as treatment for obesity and related medical conditions.

Men and women battle for ideal height: Evidence of an intralocus sexual conflict currently raging in human DNA

Posted: 13 Nov 2012 05:35 AM PST

A battle about the ideal height would appear to be raging in men's and women's genes. A researcher in Sweden has shown that this conflict is leading to a difference in reproductive success between men and women of varying height.

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