August 13, 2016 at 06:13AM

Today I Learned: 1) ...the difference between aquaponics, hydroponics, and aquaculture. Aquaculture is any kind of rearing of aquatic critters, usually plants or fish. Hydroponics is any kind of growing of plants in water, usually mineral-rich, without soil. Aquaponics is a hybridization of the two. Typically in aquaponics hydroponically-grown plants provide bits of food for fish in the form of detritus, and the fish provide fertilizer for the plants in the form of body wastes. 2) ...the difference between viruses, worms, and trojans (in the context of computer malware). The divisions between different kinds of malware can be fuzzy, but in general they follow these patterns: a virus is a program which inserts itself or other malicious code into another, usually legitimate, program, and can replicate itself when the host code is run; a worm is a standalone program that runs on its own, spreading itself without any particular intervention required; a trojan is a standalone program that tries to mimic a legitimate program in order to get a user to run it. Also, an anti-worm is a standalone program that forcibly spreads itself, patching known security vulnerabilities as it goes. They are, as one might imagine, extremely uncommon, and not recommended best practice by... anyone. 3) Although a number of animals *can* rhythmically entrain (a.k.a., move their bodies to rhythms), the ones that are *best* at it are humans, parrots, and sea lions. Just why sea lions are so good at dancing isn't really know.