This Week I Learned
You can use
instanceofto test whether an object is an
https://js.org provides free
js.orgURLs (as long as you’re presenting “reasonable content”)
Hagfish slime is ridiculous:
Typically, a hagfish will release less than a teaspoon of gunk from the 100 or so slime glands that line its flanks. And in less than half a second, that little amount will expand by 10,000 times—enough to fill a sizable bucket.