When some galaxies stop forming new stars, they become "quenched".

Quenched galaxies in the distant past appear to be much smaller than the quenched galaxies in the Universe today, which is something of a science mystery; how can these galaxies grow if they are no longer forming stars?
Hubble COSMOS survey results may have delivered a surprisingly simple answer to this long-standing cosmic riddle.

The Standard Model has some gaps and is unable to explain phenomena like dark matter or gravitational interaction between particles. Some physicists are seeking what they call "New Physics", something more fundamental, but there has been no direct proof of its existence, only indirect observation of dark matter, as deduced, among other things, from the movement of the galaxies.

A small clinical study showed promise for a new method of treating chronic wounds; an ultrasound applicator that can be worn like a band-aid.

The applicator delivers low-frequency, low-intensity ultrasound directly to wounds, and was found to significantly accelerate healing in five patients with venous ulcers, which are caused when valves in the veins malfunction, causing blood to pool in the leg instead of returning to the heart. This pooling, called venous stasis, can cause proteins and cells in the vein to leak into the surrounding tissue leading to inflammation and formation of an ulcer. 

True efficient wireless power transfer, not just giant machines in a lab or tiny mats under a cell phone, are what we all dream about. Getting rid of cords that force airport travelers to huddle around power outlets like cavemen around an Arctic fire has been the goal for a hundred years.

There are real-world obstacles to overcome, such as what happens to a resonant wireless power transfer system in the presence of complex electromagnetic environments, like metal plates.

If you live in an area where solar power is close to viable, you probably also do not get a lot of rain. Over time, dust and dirt build up on solar panels, leading to a loss of efficiency.

But not enough to warrant washing them, according to an analysis by the University of California, San Diego. 

In the beginning, there are embryonic stem cells, which divide and increasingly differentiate as they do so. The ensuing tissue cells remain in a stable state, a skin cell does not spontaneously change into a nerve cell or heart muscle cell.

The applications for embryonic stem cells
are many: When nerve tissue becomes diseased, for example, then doctors could take healthy cells from the patient's own skin. They could then reprogram these to develop into nerve cells. These healthy nerve cells would then be implanted into the diseased tissue or even replace it entirely. This would treat, and ideally heal, diseases such as Parkinson's disease.