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Nasa's OSIRIS-REx mission to collect a sample from an asteroid has been a great success. Asteroid Bennu's sample yields a watery pool of history, thanks to an international team of scientists including the London Natural History Museum's Sarah Russell.

Also, in a week of tumultuous changes to federal funding and programmes, we hear from some US scientists affected and concerned by Executive Orders from the White House. Betsy Southwood, formerly of the Environmental Protection Agency, is worried not just about the government employees’ careers, but the environment itself and the whole of environmental science in the US and the world. Chrystal Starbird runs a lab at the University of North Carolina and is worried about the fate of grants aimed at diversifying scientific expertise, but also that some grant schemes are getting erroneously included in the anti-DEI clampdown. And Lawrence Gostin is an eminent health lawyer, proud of the NIH and all it has achieved.

Presenter: Roland Pease
Producer: Alex Mansfield
Production co-ordinator: Jana Bennett-Holesworth

(Photo: OSIRIS-REx Sample Return. Credit: Nasa/Getty Images)