For vanishing so suddenly and for so long. I just got back from a two-week research project on San Salvador Island in the Bahamas. There was no internet or phone and I was unable to respond to any messages. Coincidentally, there was also no air conditioning.
I had planned to write a detailed announcement of my departure the night before, but my computer decided to stop working and I spent that day running about to drop it off at a repair shop before my flight.