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Chris deSilva is right to be cautious about carbon capture and storage, or CCS (Letters, 2 March ). It will be expensive, especially when used to capture carbon from the air, and we will need to ensure the long-term integrity of underground storage. But what is the alternative? Some chemical processes, notably cement production, release …

Joshua Howgego reports how unemployed people in Finland who received a universal basic income perceived their health and stress levels to be improved ( 16 February, p 10 ). It isn't only unemployed people who are stressed when they must prove they are looking for a job to receive unemployment benefit. Employers sometimes receive over …

You observe that researchers are struggling to find out how people are influenced by disinformation (Leader, 23 February ). I would add to this nice piece that fake news is not an internet phenomenon. It has always used whatever medium is available. You have only to pick up a copy of some newspapers to realise …

Scott McNeil notes that people from different places want open plan offices to have different temperatures (Letters, 2 March ). There is a gender difference too: women who want or are required to dress fashionably may wear less clothing than men in suits. The moral suasion on men to wear suits and ties results in …

Students in over 100 towns and cities in the UK took part in the global Youth Strike for Climate on 15 March, inspired by Greta Thunberg ( 16 March, p 7 ). Many may not be aware that their schools and sixth-form colleges may be funding businesses linked to climate change through their payments to …

Brian Pollard reminds us that atmospheric particulate pollution from cars comes from the tyres and brakes as well as exhausts (Letters, 2 March ). Particles are responsible for most of the loss of life expectancy associated with air pollution. What concerns me is that the word "particle" is being used to cover a multitude of …

You published a photo of a black leopard in Kenya, saying it may be the only image of a fully wild black leopard in Africa in a century ( 23 February, p 28 ). I was a national service conscript posted to Kenya between 1954 and 1956. We became very familiar with all the local …

You quote Simon Parkinson suggesting that a coordinated cyberattack on smart cars would take a lot of resources, so problems with such vehicles that result in gridlock may be more likely to result from a botched software update ( 9 March, p 8 ). But cars have a lot of hardware and software in common …

Kelly Oakes gives a fascinating and worrying account of fatbergs ( 26 January, p 22 ). But she claims that remedial action isn't easy because UK water companies are privately owned. In England and Wales they are. However, the water companies in Scotland and Northern Ireland are public.

Jonathan R. Goodman's report on the causes of cancer is interesting and valuable ( 9 February, p 34 ). It mentions the link between human papillomavirus and cervical cancer – but not penile cancer, which the virus may also cause . In Bali, penile carcinoma was the most common cancer in men in 2013. Male …