Monthly Archives: July 2014

Five Fruits and Veggies a Day for Longer Life

Eating five daily portions of fruit and vegetables is associated with a lower risk of death from any cause, particularly from cardiovascular disease, but beyond five portions appears to have no further effect, finds a new study.

These results conflict with a recent study published inBMJ‘s Journal of Epidemiology and Community Health suggesting

Scientists use light to stitch ‘invisible’ nanoparticles together

gold

At the centre of this new technique are tiny blocks made from ‘metamaterials’ – a special type of artificial material engineered to have properties unlike anything found in nature. These nanoparticle building blocks are just a few billionths of a metre wide, and researchers from the University of Cambridge in the UK have figured out how to control the way light flows through them.

Controlling the way light interacts with a material is a key

Magnets May Act as Wireless Cooling Agents

The theory describes the motion of magnons — quasi-particles in magnets that are collective rotations of magnetic moments, or “spins.” In addition to the magnetic moments, magnons also conduct heat; from their equations, the MIT researchers found that when exposed to a magnetic field gradient, magnons may be driven to move from one end of a magnet to another, carrying