This week was slightly truncated because of the Bank Holiday, and allowed some catching up in Swindon. I went to listen to the first speech by Dr Vince Cable (who has a PhD in economics and used to teach the subject at Glasgow) on the priorities for economic growth. Notwithstanding the present rather gloomy economic position, statements such as “BIS is the Ministry for science, and science is a vital public good” give one grounds for optimism.
I have blogged before about the fact that many things we learned when young (in science and elsewhere) are not in fact true (or may subsequently have been shown not to be). One such myth is that after adolescence one has a fixed number of brain cells and they are not regenerated in adulthood (indeed, alcohol was said to kill them by the thousand). While the very existence of brain tumours shows that adult CNS cells can divide, it does not tell us whether they normally do so. Happily, using methods such as bromodeoxyuridine (ChEBI) labelling and immunocytochemistry, it is now recognized that there is in fact considerable turnover (neurogenesis) in adults – see e.g. reviews by Gould, by Zhao et al., and by Imayoshi et al. This has many beneficial implications for healthy ageing. […]