The closure of the Darley Oaks farm in Newchurch, Staffordshire, serves as a reminder that some medical research guinea pigs are, indeed, guinea pigs. We are following that story on with a declaration from 700 British scientists affirming their support for animal testing, and looking at the recent history of animal rights campaigning and how it organises itself online.
The shooting of Jean Charles de Menezes continues to produce headlines. Ken Livingstone, the London mayor, today joined the debate over police conduct, giving his full support to the Metropolitan police commissioner, Sir Ian Blair. Elsewhere in Britain's post-7/7 world, the home secretary, Charles Clarke, will outline the kind of "unacceptable behaviour" that could see foreign nationals deported from Britain for justifying or fomenting terrorism.
Our arts blog, Culture Vulture, will have the latest from Edinburgh, and below on Newsblog is rather surprising report on crystal meth addicts in Arkansas embarking on the time-consuming search for native American arrowheads while under the influence.