It's very cold here in Chicago right now. It's not down to 5°F to (-15°C) yet, but it looks like it'll get there in the next couple of days. I'd say I'd try freezing bubbles like this — the formation of the ice crystals is very cool — but honestly when it gets that cold going outside is the last thing I'm likely to do. (Via Kottke.)
That's all for this week. Stay warm this weekend (unless you're in the Southern hemisphere, in which case: stay cool!). We'll be back on Monday, see you then.