A persistent mystery for art historians and especially students of 20th century art might seem small at first: what kind of paint did Picasso use? But in fact it's a very big shift--Picasso was thought to have been one of the first painters to switch from traditional oil paints to common house paint, which is quick-drying and smooth and allows for a very different style (it doesn't show brush-marks, for example). Now, the Art Institute of Chicago and the Argonne National Laboratory teamed up and used hard x-ray nanoprobes to analyze Picasso's paint at the molecular level.
Brain cancer is a classic double whammy: the extremely invasive form of cancer is both deadly and difficult to treat. Fortunately, there's a promising solution on the table: tumor painting.
Because brain cancer tends to invade surrounding healthy brain tissue, it blurs the line between tumor and non-tumor tissue, and makes it difficult for surgeons to circumvent the healthy parts of the brain when they saw away at the tumor. On top of that, current imaging techniques produce fairly imprecise representations of the tissue, which only compounds the problem.