Trumping consumption | Greenland and Crimea | Running robots | Coffee, beer and newsprint | Extra time in exams

Pleased to see I’m far from alone in trying to avoid American products (This un-American life: can you really divest yourself of everything from the US?, 19 April). Mostly there are alternatives. There is no need to make your own cleaning products – for example, there are Bio-D and Faith in Nature. I have a Kobo e-reader and a Doro phone. A good source of alternatives is Ethical Consumer magazine.
Ruth Clancy
Whaley Bridge, Derbyshire

• For someone who sees nothing wrong in saying the US wants Greenland, no wonder Donald Trump thinks it is alright for Russia to have Crimea (Report, 24 April).
Helen Evans
Ruthin, Denbighshire