Having worked across east Africa, I have seen at first hand the effects of chronic malnutrition (Hunger crisis kills 2.6m children a year, 15 February). Sometimes when you arrive in a village everything seems normal, but then you start to notice things: it is lunchtime but there is no food on the fire; there are children in the village but no laughter or play. Fortunately, tackling chronic malnutrition is neither difficult nor expensive. Encouraging breastfeeding and providing fortified basic foods with essential minerals or vitamins can have an instant impact on children's health. We know what works and how to deliver it. What is needed is the political will to make it happen.
Assumpta Ndumi
Nutrition adviser, Save the Children, Nairobi, Kenya
• When I was growing up in Italy, in the 50s and 60s, adults used a contraption called il prete (the priest) – a dome-shaped wooden cage with a container of hot coals in the middle to warm the bed prior to getting in (Letters, 15 February). As a child, I had a heated brick wrapped in flannels. It was deemed healthier than hot water bottles, being drier and therefore warding off rheumatisms later on.
Maria Alba Vitro Hogg
Solihull, West Midlands
• Guerrilla road signs in Oxford today in the spirit of Jeanette Winterson (It's time to reclaim love, 14 February): clever cutouts that turned every red light in the city into a Valentine's Day heart. Bravo!
Jane Caplan
St Antony's College, Oxford
• Rusbridger, Brooker, Toynbee et al are all very worthy (Guardian Open Weekend, 11 February), but what about the real stars? No mention of Fr Alec Mitchell or Keith Flett being there, or maybe Tim Dowling's wife?
Mike Smith
Southampton
• Whatever happened to that bespectacled, foreign gentleman who advised us in a lecture to rid ourselves of the BBC. What was his name now?
Ken Brown
Slough, Berkshire
• Napoleonland (Live like an emperor at Napoleon's theme park, 15 February)? I'd rather go to Bonaparc!
Paul Andrews
Staines, Middlesex