Hippopotamuses Make Their Own Sunscreen
Japanese researchers isolated ‘hipposudoric acid’ & ‘norhipposudoric acid’ from hippo sweat, which were found to provide antiseptic as well as sun protection benefits, alongside body temperature regulation, for hippopotamuses.
Diamond Plate Progression
Some counterintuitive findings from The Science of Sharp, analyzing the cutting surface of straight-edge razors honed on varying grits of DMT diamond plates.
"Often, results that contradict our intuitive expectations are a key to identifying and improving our deficient understanding."
I use DMT diamond plates to hone the gravers I use with my watchmaking lathe. Anecdotally, I find that finishing to a mirror polish using the extra-extra-fine diamond plate yields an appreciably better finish when turning down a pivot or an arbor. I'd love to see a similar set of SEM images run on a watchmaker's graver, which would be less prone to the plastic deformation conjectured through these results.
ArtyA Purity Tourbillon
The movement architecture of ArtyA's latest tourbillon is aesthetically well-balanced. With respect to the balance itself, I applaud the use of a free-sprung balance wheel—any tourbillon without a free-sprung balance, isn't taking itself seriously. I do have some concern about the one-to-one ratio of the gear train delivering power to the tourbillon itself, though.
Rolex USA Provides Official Comment on Yahoo! News Story Regarding Supply
It's worth noting that this comment is from Rolex Watch USA Inc. & not from Rolex SA. While a good degree of care clearly went into this response & the reasons provided are both sound & in line with the brand's values, the official comment itself lands a stride short of the excellence that Rolex SA is renowned for.