The Chicago river froze today. I am used to the lake freezing, but this is new. I walk across the river every day on my way to work (that’s my building on the river bank). It’s been steaming for a few days - that’s when you know it’s really cold. Apparently it steams because the river water is warmer than the air, so it evaporates and then condenses in the colder air. So, yes, the frozen river is warmer than the air in Chicago.

Tomorrow I’m off to Minneapolis, which is two degrees colder than Chicago. Hopefully we will have something other than weather to talk about soon. But to be honest, it’s tough even leaving the house at the moment. I know how bears feel. [HB]