This beautiful object is a corrosion cast of bronchi and trachea, c. 1880-1890, most likely from a rabbit, sheep, or dog. It's part of the new Body of Knowledge exhibition at the Harvard Museums of Science & Culture.
Corrosion casts have been part of anatomical teaching from the 17th century to the present, particularly for creating display specimens. A rapidly hardening substance, often metal or plastic, is injected into blood spaces or other cavities. Then the tissue is dissolved away by strong acids or bases. This cast was created using a mixture of bismuth, lead, tin, and cadmium. After injection, the tissue was dissolved in potassium hydroxide.
A better understanding how a sperm swims its way toward an egg could help inform new treatments for male infertility. Researchers from the University of York have now come up with a mathematical formula to model how large numbers of moving sperm interact with fluid they’re swimming through. From the University: By analysing the head […]
Dr Gale Ridge is a public entomologist at the Connecticut Agricultural Experiment Station, where an average of 23 people a day call, write or visit; an increasing proportion of them aren’t inquiring about actual insects, they’re suffering from delusional parasitosis, and they’re desperate and even suicidal.
The Raspberry Pi Foundation has done outstanding work packing a fully capable desktop computer into a package the size of a deck cards—especially one that only costs $35. But if you already have a working laptop, why should you care? Oh, how much you have to learn. Besides operating well as a compact digital media hub, […]
Custom coffee vessels are the perfect piece of office flair, but it’s just a matter of time before your VOTE FOR PEDRO mug will start to lose its relevant wit. Why not have a new one every day, with whatever silly nonsense you want sticking off the sides? You can save big on your novelty […]
The Lightning port has thus far resisted the cruel fate that befell the headphone jack, and despite rumors that it may be disappearing come iPhone 8, for the present and foreseeable future, Lightning cables are a hot commodity for iPhone users. As such, we must make do in this strange time in which long, glorified […]