It's not calcium carbonate that allows egg shells to be dyed at Easter time. What's responsible is the protein cuticle, a porous layer consisting of at least three different insoluble peptides. And low pH also plays an important role in binding the dye to the amino groups of the proteins, as is demonstrated in this new Bytesize video from the American Chemical Society. Now you know why...
read moreIt's not calcium carbonate that allows egg shells to be dyed at Easter time. What's responsible is the protein cuticle, a porous layer consisting of at least three different insoluble peptides. And low pH also plays an important role in binding the dye to the amino groups of the proteins, as is demonstrated in this new Bytesize video from the American Chemical Society. Now you know why...
read moreSince it's Easter season, all of Christendom will be awash in articles and television shows about the Shroud of Turin. The Shroud, if you are new to the western world, is a cloth imprinted with the face and body of a bearded man; that would be Jesus Christ, according to the theological believers, because the Bible says he was wrapped in cloth and place in the sepulcher. That this...
read morefMRI has always been a little misused, to people who know what they are talking about. 20 years after it was first done, the promise seems to have been overrun by agenda-based cultural mapping. read...
read moreSometimes there is a story with no winner and a bunch of losers. In this case, first among the losers are wind energy subsidies squandered on companies that aren't doing much good at all to bridge us to a clean energy future. California likes to brag about both its clean energy subsidies and all the patents it is getting for products that remain not very good, but without government funding...
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