Three University of Chicago chemistry professors hope that their separate research trajectories will converge to create a new way of assembling what they call “designer atoms” into materials with a broad array of potentially useful properties and functions. (more…)
An analysis of mineral grains from the bottom of the western Grand Canyon indicates it was largely carved out by about 70 million years ago — a time when dinosaurs were around and may have even peeked over the rim, says a study led by the University of Colorado Boulder.
The new research pushes back the conventionally accepted date for the formation of the Grand Canyon in Arizona by more than 60 million years, said CU-Boulder Assistant Professor Rebecca Flowers. The team used a dating method that exploits the radioactive decay of uranium and thorium atoms to helium atoms in a phosphate mineral known as apatite, said Flowers, a faculty member in CU-Boulder’s geological sciences department. (more…)
Nanotechnology for drug delivery shows promise in treatment of pediatric leukemia
Nanotechnology developed by Delaware scientists could potentially deliver chemotherapy to children in a way that attacks cancer cells without harming healthy cells, greatly reducing side effects.
The work, conducted by researchers in the University of Delaware’s Department of Materials Science and Engineering and Nemours Center for Childhood Cancer Research, was published this month in the journal Molecular Pharmaceutics. (more…)
Computer Models, Satellite Data Reveal Clearest Evidence Yet of Human Influence on Changing Temperatures
New research shows some of the clearest evidence yet of a discernible human influence on atmospheric temperature.
Published online in the Nov. 29 early edition of the Proceedings of the U.S. National Academy of Sciences, the study compared 20 of the latest climate models against 33 years of satellite data. When human factors were included in the models, they followed the pattern of temperature changes observed by satellite. When the same simulations were run without considering human influences, the results were quite different.
“We can only match the satellite record when we add in human influences on the atmosphere,” said Michael Wehner, a research scientist at Lawrence Berkeley National Laboratory (Berkeley Lab) Computational Research Division and a coauthor of the article, which involved colleagues from 16 other organizations and was led by Benjamin Santer, an atmospheric scientist at Lawrence Livermore National Laboratory (LLNL). (more…)
Until now, brain scientists have been almost completely in the dark about how most of the nonspecific thalamus interacts with the prefrontal cortex, a relationship believed to be key in such fundamental functions as maintaining consciousness and mental arousal. Brown University researchers performed a set of experiments, described in the Journal of Neuroscience, to explore and measure those circuits for the first time.
PROVIDENCE, R.I. [Brown University] — Inside the brains of mice and men alike, a relatively big football-shaped region called the thalamus acts like a switchboard, providing the prefrontal cortex, the part that does abstract thinking and decision-making, with most of its information. The thalamus’s responsibility even includes helping the prefrontal cortex to maintain consciousness and arousal. (more…)
The only way to protect against HIV and unintended pregnancy today is the condom. It’s an effective technology, but not appropriate or popular in all situations. (more…)
Winners of the second annual Imagine Cup Grants program, part of Microsoft’s YouthSpark initiative, include student startups aiming to eliminate traffic jams and bring cheap, effective ways to diagnose childhood pneumonia.
MOUNTAIN VIEW, Calif. — Dec. 4, 2012 — Traffic jams typically produce little more than frustration, profanity, and CO2. Four years ago, though, they happened to give Christian Brüggeman an idea.
He was sitting in a London Starbucks with a friend and fellow computer science student. As they chatted, they noticed that one street outside was choked with cars while another was practically empty.
They wondered why drivers weren’t taking advantage of every possible route. If cars could be directed along less-congested roads, wouldn’t that prevent back-ups before they began? (more…)
Using multiple forms of media at the same time – such as playing a computer game while watching TV – is linked to symptoms of anxiety and depression, scientists have found for the first time. (more…)
