Carved nephrite #minerals are tough enough to make fishhooks and bladed weapons like the mere from. Nephrite, Ca₂(Mg, Fe)₅Si₈O₂₂(OH)₂, is an actinolite amphibole; it contains slightly more silicon than #enstatite, and also contains calcium and hydroxyls, which enstatite doesn’t. How would you go about synthesizing nephrite? Especially without accidentally creating asbestos? #materials
This is the international treaty that makes it hard to get such basics as acetone in Argentina.
Gideon Lewis-Kraus’s article on the birth of Google Brain. This is up there with Tracy Kidder and Steven Levy when it comes to being a “first draft of history” of computing technology.
Oakland fire gives Anonymous an excuse to organize against similar spaces.