Physicists from the University of Bonn have developed a completely new source of light, a Bose-Einstein condensate consisting of photons, something not known to be possible, which may potentially be suitable for designing light sources resembling lasers that work in the x-ray range. 

By cooling Rubidium atoms deeply and concentrating a sufficient number of them in a compact space, they suddenly become indistinguishable. They behave like a single huge "super particle." Physicists call this a Bose-Einstein condensate.

This holiday season, starting today when you bite into the cranberry sauce and the tartness smacks your tongue as hard as that snide comment from your sister, consider the power of sour.
Neurobiology researchers at the University of Southern California have made a surprising discovery about how some cells respond to sour tastes.

Of the five taste sensations — sweet, bitter, sour, salty and umami — sour is arguably the strongest yet the least understood. Sour is the sensation evoked by substances that are acidic, such as lemons and pickles. The more acidic the substance, the more sour the taste.

Some researchers have proposed that, because people can get through money certain things they can get through acceptance, money might act as a substitute for social acceptance. Since social distress and physical pain seem to have similar underlying mechanisms, a few interesting experiments have been done to test this idea. One study reports six experiments, which I'll summarise briefly here.