An increase in blood pressure when a person is middle-aged, significantly increases your risk of heart attack or stroke at some point the rest of his life, according to new research. This study provides a new perspective on the importance of maintaining low blood pressure upon entering middle age, in order to prevent heart disease appear some time later.

The research found that men and women who developed hypertension being middle-aged or have already suffered, had a 30 percent increased risk of heart attack or stroke, compared with those who maintained their blood pressure low. Previous estimates of the risk that a person suffering from cardiovascular disease was based on a single measurement of blood pressure. Read the rest of this entry »

Many anthropologists suspect that social prejudices have their evolutionary roots in the instinct of survival, particularly in the trend that our distant ancestors had to avoid strangers, by ignoring them their health and fear they could be carriers of disease.

Research shows that even today when people feel vulnerable to disease, exhibit more prejudice against socially stigmatized groups. In a new study has delved into the issue. Read the rest of this entry »

A diverse group of scientists, experts in cardiology, neurology, immunology, microbiology and chemistry, is being organized to study potential drugs that have shown promise in treating HIV-associated dementia, to explore its potential usefulness in the treatment of an equally worrying disease: heart failure.

In this case, the connection between head and heart behind a particular enzyme that scientists believe plays an important role in the development of that in the case of dementia and heart failure. Read the rest of this entry »

An autonomous navigation system that allows a future rover have complete control of its own shares as it moves across the surface of Mars and explore the land, is being designed by scientists and engineers in the UK, France and Canada, Rutherford Appleton Laboratory (STFC) near Oxford in the UK.

The Seeker Project is a project of seven months to design a system of navigation that, as opposed to the previous systems, will permit to a robotic vehicle to be displaced by Mars of completely independent form, covering at least a kilometer to the day. The Seeker navigation system will allow better react to their environment and carry out experiments in more places. Read the rest of this entry »

The idea that the photovoltaic solar energy is still too expensive to make it viable to use it widely is a myth. So resounding shows Joshua Pearce, Professor in the Department of Mechanical Engineering and Materials Engineering at Queen’s University in Canada.

“Many analysts expect a higher cost for photovoltaic solar energy because these do not consider recent technological advances and price reductions”, argues the expert of that Canadian university. “The old models to determine the costs of solar PV are too conservative”. Read the rest of this entry »

It has set a new world record for data transfer, a milestone that will help make possible the advent of next generation technology to high-speed networks.

An international team of researchers recently succeeded in transferring data in opposite directions at a combined rate of 186 gigabits per second (Gbps) across a network. This rate is equivalent to moving two billion gigabytes a day, fast enough to transfer in one day nearly 100,000 Blu-ray complete, i.e. each with a full movie and all its accessories. Read the rest of this entry »

The extreme temperatures and pressures deep within the Earth cause atoms and electrons are so crowded that interact very differently than usual. With depth, the materials change.

New experiments and calculations performed using supercomputers have brought to light that iron oxide undergoes a new type of transition when subjected to the conditions present in the depths of the Earth, and that leads him to acquire property that does not have in other environments as example in the planet’s surface. Read the rest of this entry »

An analysis of functional magnetic resonance imaging, performed in the brain to detect possible long-term effects of playing violent video games for many hours, has revealed temporal changes in brain regions associated with cognitive functions and control of emotions in young adults after a week to devote several hours to play with a game of this type.

The controversy over whether or not violent video games are potentially harmful to users is in the spotlight for many years. However, there is little scientific evidence to demonstrate unequivocally that video games of this kind have prolonged negative neurological effects. Read the rest of this entry »

In search of wealth and power in the last 5,000 years, humans have released into the environment 385,000 tons of mercury, according to the results of a new study that challenges the idea that emissions of mercury to the environment have declined in recent times.

The issue is important, taking into account the toxicity of mercury and its capacity to harm the environment. The results of this research have been presented in the Journal of Environmental Science & Technology, American Chemical Society (ACS). Read the rest of this entry »

One of the earliest disorders caused by Alzheimer’s disease, impaired sense of smell, has been reversed in a disease model in mice. This was achieved by removing plaque-forming protein.

The team of Daniel Wesson, a neuroscience professor at the Case Western Reserve University School of Medicine, USA, has confirmed that the protein, called beta-amyloid that causes impairment of smell. Read the rest of this entry »