I was finally well enough to travel to my project in San Francisco on Monday morning, and off I went. It was already bright and sunny at 5.30 am when my taxi picked me up, and the airport was crowded with summer travelers. It was a very warm 99 °F (38 °C) here in Walnut Creek today. At the end of the day when I got to the hotel room and opened my roller bag that had been in the rental car’s trunk all day, my clothes were warm to the touch – as if it had come out of my tumble dryer !