1.Evolution of the magnetic field in two simulations of the formation of active solar regions. Top row: non-eruptive scenario where the configuration remains stable. Bottom row: eruptive scenario.
Credit: © E.Pariat, figure adapted from Pariat & al, A&A 2017
2. Time evolution of the value of a quantity based on magnetic helicity, for the various numerical simulations tested. This predictive quantity has high values before the eruption in the eruptive simulations (red, orange and yellow curves) and low values in the non-eruptive cases (black, violet, blue and cyan curves).
3. Artist’s impression of a solar flare and the twisted magnetic field that carries away the ejected solar material.

The emerging discipline of space meteorology aims to reliably predict solar flares so that we may better g...

UT Southwestern researchers have developed a DNA vaccine that helps the body protect against toxic proteins associated with Alzheimer’s disease. These images show amyloid plaque in the mouse brain using plasma containing anti-amyloid antibody from large mammals immunized with the vaccine. Credit: UT Southwestern

A new DNA vaccine when delivered to the skin prompts an immune response that produces antibodies to protect against toxic proteins associated with Alzheimer’s disease – without triggering severe brain swelling that earlier antibody treatments caused in some patients. Two studies from the Peter O’Donnell Jr. Brain Institute demonstrate in animals how a vaccine containing DNA of the toxic beta-amyloid protein elicits a different immune response that may be safe for humans...

A study carried out in mice may help explain why dieting can be an inefficient way to lose weight: key brain cells act as a trigger to prevent us burning calories when food is scarce.

A study carried out in mice may help explain why dieting can be an inefficient way to lose weight: key brain cells act as a trigger to prevent us burning calories when food is scarce. “Weight loss strategies are often inefficient because the body works like a thermostat and couples the amount of calories we burn to the amount of calories we eat,” says Dr Clémence Blouet from the Metabolic Research Laboratories at University of Cambridge. “When we eat less, our body compensates and burns fewer calories, which makes losing weight harder...

A self-healing structural color hydrogel inspired by nature A set of self-healing hydrogel films with different structural colors. Credit: Yuanjin Zhao.

A team of researchers at Southeast University in China has developed a self-healing structural hydrogel with a wide variety of applications. It has been noted for several years that one area where humanoid robots are lacking is skin tone—most robots have a pasty white complexion, which is both disturbing and likely to lead to social problems once robots become mainstream. Most artificial skin is not able to heal itself, which means that robots need skin replacement if it gets damaged or accidentally colored in undesirable ways. There is also the issue of colors fading...