Many people think about science as a collection of facts: A cheetah can achieve speeds of 75 mph; the mitochondria are the powerhouse of the cell; E=mc2. But all of these facts, as interesting as they are, are just the outcome of science. (more…)
Experiments at Berkeley Lab confirm that structural defects at the periphery are key in catalyst function
Defects and jagged surfaces at the edges of nanosized platinum and gold particles are key hot spots for chemical reactivity, a team of researchers working at the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) and the Hebrew University of Jerusalem in Israel confirmed with a unique infrared probe. (more…)
A UA-led study provides some of the first evidence for the hypothesis of co-divergence between parasites and hosts acting as a major driver of biodiversity
Say what you will about the parasitic lifestyle, but in the game of evolution, it’s a winner. (more…)
Life took root more than four billion years ago on our nascent Earth, a wetter and harsher place than now, bathed in sizzling ultraviolet rays. What started out as simple cells ultimately transformed into slime molds, frogs, elephants, humans and the rest of our planet’s living kingdoms. How did it all begin?
A new study from researchers at NASA’s Jet Propulsion Laboratory in Pasadena, Calif., and the Icy Worlds team at NASA’s Astrobiology Institute, based at NASA’s Ames Research Center in Moffett Field, Calif., describes how electrical energy naturally produced at the sea floor might have given rise to life. While the scientists had already proposed this hypothesis — called “submarine alkaline hydrothermal emergence of life” — the new report assembles decades of field, laboratory and theoretical research into a grand, unified picture. (more…)
Over the last three decades U.S. parents have committed filicide — the killing of one’s child — about 3,000 times every year. The horrifying instances are often poorly understood, but a recent study provides the first comprehensive statistical overview of the tragic phenomenon. The authors also suggest underlying hypotheses of motives with the hope of spurring research on filicide prevention.
PROVIDENCE, R.I. [Brown University] — Instances in which parents kill their children may seem so horrifying and tragic that they defy explanation. Published scientific and medical research, meanwhile, doesn’t offer much epidemiological context to help people understand patterns among such heinous crimes. A paper in the March edition of the journal Forensic Science International provides the first comprehensive statistical analysis of filicide in the United States, drawing on 32 years of data on more than 94,000 arrests. The study also explores possible underlying psychiatric and biological underpinnings of filicide. (more…)
UCLA researchers publish landmark meta-analysis of sexual preferences at ovulation
If she loves you and then she loves you not, don’t blame the petals of that daisy. Blame evolution.
UCLA researchers analyzed dozens of published and unpublished studies on how women’s preferences for mates change throughout the menstrual cycle. Their findings suggest that ovulating women have evolved to prefer mates who display sexy traits – such as a masculine body type and facial features, dominant behavior and certain scents – but not traits typically desired in long-term mates. (more…)
A growing body of evidence suggests that the brain plays a key role in glucose regulation and the development of type 2 diabetes, researchers write in the Nov. 7 ssue of the journal Nature. If the hypothesis is correct, it may open the door to entirely new ways to prevent and treat this disease, which is projected to affect one in three adults in the United States by 2050.
In the paper, lead author Dr. Michael W. Schwartz, UW professor of medicine and director of the Diabetes and Obesity Center of Excellence, and his colleagues from the universities of Cincinnati, Michigan, and Munich, note that the brain was originally thought to play an important role in maintaining normal glucose metabolism With the discovery of insulin in the 1920s, the focus of research and diabetes care shifted to almost exclusively to insulin. Today, almost all treatments for diabetes seek to either increase insulin levels or increase the body’s sensitivity to insulin. (more…)
Study analyzes more than 1 million books published over 200 years
A new UCLA analysis of words used in more than 1.5 million American and British books published between 1800 and 2000 shows how our cultural values have changed.
The increase or decrease in the use of certain words over the past two centuries — a period marked by growing urbanization, greater reliance on technology and the widespread availability of formal education — reveals how human psychology has evolved in response to major historical shifts, said Patricia Greenfield, a distinguished professor of psychology at UCLA and the author of the study. (more…)
