For the past three years a satellite has circled the Earth, collecting data to determine whether two predictions of Albert Einstein's general theory of relativity are correct.

Are you ready for "X-ray glasses" that see through fog - and even clothing? With their new world record in high-frequency submillimeter waves, researchers at the UCLA Henry Samueli School of Engineering and Applied Science are bringing that kind of imaging technology closer to reality.

The record-setting 324-gigahertz frequency was accomplished using a voltage-controlled oscillator in a 90-nanometer complementary metal-oxide semiconductor (CMOS) integrated circuit, a technology used in chips such as microprocessors.

An earthquake engineer at Washington University in St. Louis has successfully performed the first test of wireless sensors in the simulated structural control of a model laboratory building.

Shirley J. Dyke, Ph.D., the Edward C. Dicke Professor of Civil Engineering and director of the Washington University Structural Control and Earthquake Engineering Laboratory, combined the wireless sensors with special controls called magnetorheological dampers to limit damage from a simulated earthquake load.

Her demonstration is the first step toward implementing wireless sensors for structural control in real buildings and structures, enabling less manpower requirements and far less remodeling of existing structures.

Four-year-old girls are six times more likely to have a Body Mass Index (BMI) of more than 30 than they were 20 years ago and ten-year-olds are five times more likely, according to research published in the April issue of Acta Paediactrica.

Swedish researchers who studied BMI figures for more than a thousand children over two decades discovered that obesity levels had risen significantly among younger children, but that levels were much more constant among teenagers included in the research. They also found that young girls were much more likely to be overweight or obese than boys.

The high rate of diabetes among indigenous people is not due to their genetic heritage, according to a recently published study.

The study was authored by Dr Yin Paradies, an epidemiologist from Darwin's Menzies School of Health Research along with two researchers from the United States. It shows that the high rates of diabetes among indigenous people across the globe are rooted in social disadvantage rather than a genetic pre-disposition specific to indigenous populations.

A vaccine for treating a recurrent cancer of the central nervous system that occurs primarily in the brain has shown promise in preliminary data from a clinical trial at the University of California, San Francisco.

Known as a glioma, this cancerous tumor is always fatal. Findings from a group of 12 study patients showed that vitespen vaccination (trademarked as Oncophage) was effective in stimulating the patient’s immune system to attack the tumor cells, a function that is known medically as tumor-specific immune response. All the patients had recurrent, high-grade glioma, and all showed the immune response. The vaccine is made from the patient’s own tumor.