I had the great pleasure of a friend visiting from home recently. Jane and I did our honours degrees in linguistics at Victoria University of Wellington way back in 1989, and have maintained a firm friendship ever since, often going on adventures together, like tramping and canoeing. This time we drove to the Grand Canyon, on the way stopping to see Biosphere 2, now owned by the University of Arizona. Much of the adventure of the 6 hour drive there and back was me driving on the right hand side for the first time! But all was good with Jane beside me, navigating and reminding me to keep on the right as I turned corners. The tour of the Biosphere was fascinating, learning about the group of people who were sealed in there for two years, and the many experiments being conducted there since, some of which are in partnership with NASA, looking at how food could be grown on Mars, for example. We arrived at the Canyon just after sunset, seeing some elk grazing and crossing the roa...